Download or read book Quarterly Journal of Microscopical Science 1859 Vol 7 Classic Reprint written by and published by . This book was released on 2015-06-30 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, 1859, Vol. 7 During a recent voyage from India the success attending the use of certain appliances contrived by me for capturing such marine objects as came in our way, induces me to offer the subjoined account of them to the public. I may mention that, although familiar with the ordinary form of towing net and sounding apparatus, it struck me that much more might be done by resorting to some simple form of casting net, than is possible v.here the chapter of accidents is relied on for bringing within the jaws of the towing net the objects required, and by constructing some more portable sounding apparatus, which would at the same time prove effective at moderate depths, and bring up a much larger quantity of material than is attainable under the ordinary sounding lead, or the more complicated and cumbrous contrivance of Lieutenant Maury and others. I would further premise that whoever desires to make a collection of marine floating; molluses, tuniearies, ascidians, and the like, and also, the minuter organisms which exist in all latitudes in the open ocean, to a greater or lesser extent, will be grievously disappointed if he imagines that the trailing net used astern of a ship will suffice for the purpose. For, to be at all successful, constant and unremitting watchfulness is, in the first place, essential; and what is equally important, a fitting place of observation at the stern of the vessel, with ten or twelve feet of the water bend. In my own case, the quarter gallery of a 1500-ton merchantman afforded the best of all look-out ports; and from it I was enabled to use the casting net about to be described with ease and certainty. In the clear blue water of the open sea it is astonishing how rapidly the eye accustoms itself to detect creatures of the minutest size; and how readily it learns to distinguish, even in the small patches of calm water between each wave when a considerable sea is running, any object that may chance to be swimming near the surface. Nor is this confined to the portion of sea immediately below the observer, but it can be done at a distance of several yards. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Quarterly Journal of Microscopical Science written by Edwin Lankester and published by Salzwasser-Verlag. This book was released on 2022-12-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reprint of the original, first published in 1859.

Download or read book Quarterly Journal of Microscopical Science V 7 1859 written by Anonymous and published by Palala Press. This book was released on 2018-03-03 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Quarterly Journal of Microscopical Science 1867 Vol 7 written by Edwin Lankester and published by Forgotten Books. This book was released on 2016-08-31 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, 1867, Vol. 7: With Illustrations on Wood and Stone I purpose to speak in this paper of some points upon which I have been led to adopt conclusions at variance with those generally accepted on the mode of growth and structure of the early vertebrate ovum, not to discuss the whole ques tion. It is remarkable at how early an age the ovaries are found to contain perfect young ova. Fry of a in length, and not more than one month old, have well-developed ova in their ovaries, and the young males are even more remarkable in respect of the early development of the male gland, in which actively moving spermatozoids are found when the fry are not above 1 in length. The germinal vesicle, which is always present in the earliest recognisable ova, contains, besides the germinal spots, a delicate translucent colloid mass, which, like a pellet of thick mucus, supports and gives great resisting power to the vesicle. From very various and not clearly ascertained causes, a fine molecular deposit, easily dissolved by weak solutions of alkaline chlorides, is apt to appear in the colloid mass. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book The Quarterly Journal of Microscopical Science 1898 1899 Vol 41 Classic Reprint written by E. Ray Lankester and published by Forgotten Books. This book was released on 2018-05-05 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Quarterly Journal of Microscopical Science, 1898-1899, Vol. 41 On the Development of Tubulipora, and on some British and Northern Species of this Genus. By sidney F. Harmer, Fellow of King's College, Cambridge; Superintendent of the University. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Quarterly Journal of Microscopical Science 1892 Vol 33 Classic Reprint written by and published by Forgotten Books. This book was released on 2018-02-06 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, 1892, Vol. 33 I have not deemed it necessary to give references for facts to be found in every text-book, though I have verified as far as possible every statement from the original authorities. In all other cases I have cited my authority in a foot-note. The following is a list of the text-books and papers of general interest to which I may refer the reader. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Quarterly Journal of Microscopical Science Vol 8 written by Edwin Lankester and published by Forgotten Books. This book was released on 2018-02 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, Vol. 8: With Illustrations on Wood and Stone Starch, from its physiological importance, remarkable structural peculiarities, and general diffusion through the vegetable kingdom, has been a favourite subject of investigation with physiologists and microscopists. However, not-withstanding the attention which has been devoted to its structure and development, it is acknowledged by the greatest physiologists to be known but little of. (See Mr. Busk's paper on "Starch Granules," in the number of the 'Quarterly Journal of Microscopical Science' for April, 1853.) There are, doubtless, intrinsic difficulties attending the investigation of this substance, but these have been very much augmented by the principle on which the examination has been conducted, namely, the cellular hypothesis. If this hypothesis had been in itself correct, and admissible as a basis of explanation of the facts connected with the structure and mode of formation of the starch granule, it ought, considering the amount of talent and ingenuity which have been employed in its application to these inquiries, to have thrown more light upon these much disputed, and as yet entirely unsettled questions. After this apology for thus differing from the high and almost universally credited authorities of the present day, I shall proceed to explain on a new principle - one strictly mechanical in its immediate operation - "the principle of molecular coalescence," - those points connected with the structure and development of starch granules, by which physiologists and botanists have been so long puzzled. In this paper the same train of reasoning will be employed, and the same experimental data adduced, as in my last paper, that on the "Structure and Mode of Formation of the Dental Tissues," as also in that on "Shell Structures;" and hence, though treating of a very different class of organized structures, this is still but an extension of my former researches. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Quarterly Journal of Microscopical Science Vol 21 Classic Reprint written by E. Ray Lankester and published by Forgotten Books. This book was released on 2018-01-23 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, Vol. 21 The zooecia are about 0045 inch long by 002 in width, which is tolerably uniform from top to bottom. The outer border, as in most species of Bugula, is hollowed on the ex ternal border and towards the lower end in most of the zooecia, a sort of step is thrown out (pl. I, fig. Upon which is articulated the avicularium. The inner border is evenly rounded, and the upper and inner angle is completely rounded off, whilst the external is produced and crowned with a short, pointed, spinous process. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Quarterly Journal of Microscopical Science 1854 Vol 2 written by Edwin Lankester and published by Forgotten Books. This book was released on 2018-02-21 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, 1854, Vol. 2: With Illustrations on Wood and Stone In addition to those I have described there are very many other forms already familiar to observers of the Diatomea, and doubtless some new forms which 1 have overlooked. I am well aware that the present is a most imperfect sketch of a highly interesting gathering, containing, as will be shown by the following summary, no less than 55 species, of which 20 are certainly new, and in addition 4 forms of Sponge spicula. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Quarterly Journal of Microscopical Science 1878 Vol 18 Classic Reprint written by E. Ray Lankester and published by Forgotten Books. This book was released on 2018-02-10 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, 1878, Vol. 18 Again, the tooth of the hake is furnished with a living pulp, richly vascular, the vessels of which enter through the hinge so as not to he put upon the stretch by the movement of the tooth, while the hinged tooth of the pike is a compara tively pulpless structure. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book The Quarterly Journal of Microscopical Science 1895 Vol 38 Classic Reprint written by E. Ray Lankester and published by Forgotten Books. This book was released on 2018-03 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Quarterly Journal of Microscopical Science, 1895, Vol. 38 A Criticism of the cell-theory being an Answer to Mr. Sedgwick's Article on the Inadequacy of the Cellular Theory of Development. By gilbert C. Bourne, f..l S., Fellow of New College. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Quarterly Journal of Microscopical Science written by Royal Microscopical Society (Great Brita and published by Palala Press. This book was released on 2015-11-20 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Quarterly Journal of Microscopical Science 1915 Vol 60 Classic Reprint written by Ray Lankester and published by Forgotten Books. This book was released on 2018-10-09 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, 1915, Vol. 60 The operculum is generally elongate or unguiform, and so small that it is useless for closing the mouth of the shell when the animal has withdrawn itself inside. The shells are covered with yellowish periostracum, which in some species is only a thin, smooth, transparent, but tough coating. In others, as in C. Tulip a, the periostracum is exceedingly thick and of a dark-brown colour. It is rough, furrowed longitudinally, and of a leather-like texture, and has tufts or outgrowths disposed in even rows along its surface. When dry, this thick periostracum becomes very brittle and peels OR the shell. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Quarterly Journal of Microscopical Science Vol 5 Classic Reprint written by Edwin Lankester and published by Forgotten Books. This book was released on 2018-02-04 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, Vol. 5 Metamorphoses of man and the lower animals, by A. De Quatrefages, translated by Dr. H. Lawson, 37, 151. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Quarterly Journal of Microscopical Science 1899 Vol 41 Classic Reprint written by and published by . This book was released on 2015-06-28 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, 1899, Vol. 41 On both sides of the Atlantic, latitude 40 N. marks approximately the southern limit of Arenicola marina. South of this it is replaced in the Mediterranean by A. Claparedii, Lev., and by A. cristata, Stimps., the latter also ranging on the west side of the Atlantic from Cape May (N. J.) to the Caribbean Sea. Its reputed occurrence on the north coast of Alaska (Murdoch), at Vancouver Island (Marenzeller, 1887), Coquimbo, and South Africa requires confirmation. An abundant, widely ranging, and undoubtedly old form such as Arenicola, might be expected to vary considerably in its habits and structure, though it has not hitherto been ascertained how far this is the case. Having paid special attention to this point, we have found that there are (at least on the Lancashire coast) two varieties of A. marina, differing in habits, structure, and times of maturity, and that there is, in addition, considerable individual variability. (1) From high-water mark down to the beginning of the Laminarian zone, the common shore lugworms (or "lugs," as fishermen call them, in contradistinction to the second variety, or "worms") sink their U-shaped burrows to a depth of from one to two feet below the surface. One end of the burrow is marked by a casting, the other by a "countersunk" hole, through which the head of the lugworm is protruded when the tide comes in. The size and colour of the animal vary with the amount of muddy organic matter in the sand. Where there is comparatively little mud, the Arenicola average about seven inches in length and are somewhat transparent, so that the superficial blood-vessels can be clearly seen through the thin body-wall. The gills, which are not very strongly developed, are composed of nine to eleven branches, each provided with three to five pairs of short lateral twigs (Pl. 1, fig. 3). The proboscis and prostomium are only slightly pigmented, and being very vascular, appear red in colour. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."

Download or read book Quarterly Journal of Microscopical Science written by Royal Microscopical Society (Great Brita and published by Wentworth Press. This book was released on 2019-03-24 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Quarterly Journal of Microscopical Science 1897 Vol 39 Classic Reprint written by E. Ray Lankester and published by Forgotten Books. This book was released on 2018-02-04 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Quarterly Journal of Microscopical Science, 1897, Vol. 39 The fact that the tint of the worm is due to contained blood, and not to any pigment in the skin, is readily recognised by the unaided eye when the alternating processes of eversion and retraction of the proboscis or introvert is watched. So long as the introvert is at rest within the body the thorax is coloured; when eversion takes place the tint becomes quite faint (pl. 1, fig. - in fact, frequently the thorax becomes white. The blood in the thorax is contained in greatly dilated vessels, which block up and obliterate nearly the whole of the coelom (fig. The introvert is a hollow sac traversed by thin bundles of retractor muscles, the cavity of the sac being con tinuous with the dilated vessels, so that on eversion nearly the whole of the blood in the thorax is driven into the introvert this flow of blood is, of course, the cause of the eversion, - and the thorax is more or less completely deprived of its colour. The fact that the abdomen is not tinted by the blood to any great degree is due to the small size of the blood-vessels in this region. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.