Download or read book Report on the Radiolaria Collected by H M S Challenger During the Years 1873 1876 Porulosa Spumellaria and Acantharia and Subclass Osculosa written by Ernst Heinrich Philipp August Haeckel and published by Library of Alexandria. This book was released on 2020-09-28 with total page 3247 pages. Available in PDF, EPUB and Kindle. Book excerpt: ÊThe significance of the Radiolaria in regard to the relations of life in the ocean has been increased in a most unexpected manner by the discoveries of the Challenger. Large swarms of these delicate Rhizopoda were found not only at the surface of the open ocean but also in its different bathymetrical zones. Thousands of new species make up the wonderful Radiolarian ooze, which covers large areas of the deep-sea bed, and was brought up from abysses of from 2000 to 4000 fathoms by the sounding machine of the Challenger. They open a new world to morphological investigation. When ten years ago (in the autumn of 1876) I accepted the enticing invitation of Sir Wyville Thomson to undertake the investigation of these microscopic creatures, I hoped to be able to accomplish the task with some degree of completeness within a period of from three to five years, but the further my investigations proceeded the more immeasurable seemed the range of forms, like the boundless firmament of stars. I soon found myself compelled to decide between making a detailed study of a selection of special forms or giving as complete a survey as possible of the varied forms of the whole class; and I decided upon the latter course, having regard both to the general plan of the Challenger Reports, and to the interests of our acquaintance with the class as a whole. I must, however, confess at the close of my work that my original intention is far from having been fulfilled. The extraordinary extent and varied difficulties of the undertaking must excuse the many deficiencies. The special examination of the Challenger collection was for the most part completed in the summer of 1881; I collected its results in my Entwurf eines Radiolarien-Systems auf Grund von Studien der Challenger-Radiolarien (Jenaische Zeitschr. f. Naturw., Bd. xv., 1881). Since the manuscript of this preliminary communication was completed only a few days before my departure for Ceylon, and since I was unable to correct the proofs myself, several errors have crept into the Prodromus Systematis Radiolarium included in it. These have been corrected in the following more extensive working out of it. Even at that time I had distinguished 630 genera and more than 2000 species; but on the revision of these, which I undertook immediately on my return from India, this number was considerably increased. The total number of forms here described amounts to 739 genera and 4318 species; of these 3508 are new, as against 810 previously described. In spite of this large number, however, and in spite of the astonishing variety of the new and marvellous forms, the riches of the Challenger collection are by no means exhausted. A careful and patient worker who would devote a second decade to the work, would probably increase the number of new forms (especially of the smaller ones) by more than a thousand; but for a really complete examination, the lifetime of one man would not suffice.

Download or read book Report on the Cephalopoda Collected by H M S Challenger During the Years 1873 1876 written by William E. Hoyle and published by . This book was released on 1965 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on the Polyplacophora Collected by H M S Challenger During the Years 1873 1876 written by Alfred Cort Haddon and published by . This book was released on 1965 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Royal Geographical Society and Monthly Record of Geography written by Royal Geographical Society (Great Britain) and published by . This book was released on 1886 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on the Foraminifera Collected by H M S Challenger During the Years 1873 1876 written by Henry Bowman Brady and published by . This book was released on 1965 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on Some Points in the Anatomy of the Thylacine Thylacinus Cynocephalus Cuscus Phalangista Maculata and Phascogale Phascogale Calura Collected During the Voyage of H M S Challenger in the Years 1873 1876 written by Daniel John Cunningham and published by . This book was released on 1882 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on the Actiniaria Dredged by H M S CHallenger During the Years 1873 1876 written by Richard Hertwig and published by . This book was released on 1965 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on the Tetractinellida Collected by H M S Challenger During the Years 1873 1876 written by William Johnson Sollas and published by . This book was released on 1965 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Royal Geographical Society and monthly record of geography written by and published by . This book was released on 1884 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on the Nudibranchiata Dredged by H M S Challenger During the Years 1873 1876 written by Ludvig Sophus Rudolph Bergh and published by . This book was released on 1965 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Memorials of the Pilgrim Fathers written by William Winters and published by . This book was released on 1882 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Taxonomy of Crustaceans written by and published by BRILL. This book was released on 2021-09-27 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is devoted to the memory of the Chinese carcinologist Prof. Ruiyu Liu (1922-2012) who dedicated his life to taxonomy, systematics, ecology, zoogeography and aquaculture. His scientific career started in 1949 with his first publications and continued.

Download or read book The Lancet written by and published by . This book was released on 1883 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on Strikes and Lock outs in the United Kingdom and on Conciliation and Arbitration Boards written by Great Britain. Board of Trade and published by . This book was released on 1889 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Explosives Act 1875 Annual Report of His Majesty s Inspectors of Explosives written by Great Britain. Home Office and published by . This book was released on 1889 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on Strikes and Lock outs in the United Kingdom and on Conciliation and Arbitration Boards written by and published by . This book was released on 1890 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book South Africa written by and published by . This book was released on 1890 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: