Download or read book San Jose Scale and Its Nearest Allies a Brief Consideration of the Characters Which Distinguished These Closely Related Injurious Scale Insect written by United States. Department of Agriculture and published by . This book was released on 1897 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The San Jose Scale and Its Nearest Allies written by Theodore Dru Alison Cockerell and published by . This book was released on 1897 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The San Jose Scale and Its Nearest Allies written by Theodore Dru Alison Cockerell and published by . This book was released on 1897 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The San Jose Scale and Its Nearest Allies written by Theodore Dru Alison Cockerell and published by . This book was released on 1897 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book San Jose Scale and Its Nearest Allies written by and published by . This book was released on 1897 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book San Jose Scale and Its Nearest Allies written by Theodore Dru Alison Cockerell and published by Palala Press. This book was released on 2016-05-24 with total page 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 The San Jose Scale and Its Nearest Allies a Brief Consideration of the Characters which Distinguish These Closely Related Injurious Scale Insects Prepared by T D A Cockerell written by T. D. A. Cockerell and published by . This book was released on 1897 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The San Jose Scale and Its Nearest Allies written by Theodore Dru A. Cockerell and published by . This book was released on 2015-07-22 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The San Jose Scale and Its Nearest Allies: A Brief Consideration of the Characters Which Distinguish These Closely Related Injurious Scale Insects Suppose that some objects suspected to be San Jose scales have been found upon a fruit tree. The first thing to do is to ascertain whether they are scales (Coccidae) at all. I have known fly marks to be taken for Coccidae, and occasionally the lenticels on the young growth of trees are supposed to be scale insects by those whose experience ought to have taught them better. It is really remarkable how the lenticels on cotton wood twigs in the Mesilla Valley, N. Mex., resemble a scale prevalent in that locality, Aspidiotus juglans-regiw var. albus. From a short distance the deception would be complete but for the fact that the lenticels are arranged at approximately equal distances from one another and not massed like scale insects. Still more like coccids are certain fungi; I have on occasion been obliged to use a lens to ascertain which I had before me. At Mesilla, N. Mex., I found on the dead wood of an apple tree a fungus which closely resembled the second stage, or immature male scales of the San Jose scale. This fungus was kindly identified for me by Mr. J. B. Ellis as the cytispora stage of Valsa ambiens Persoon. It is presumed that no entomologist will be misled for more than a moment by lenticels or fungi, but for those who are not entomologists it may be recommended to scrape the object with the finger nail or a knife blade, when, if it is a scale insect, it will readily come away, leaving at most only a pale film. Granting now that we certainly have a scale insect before us, it is to be learned whether it belongs to the subfamily Diaspinae. A mealybug has no scale - only some mealy or cottony secretion; a Lecanium or shield scale is itself the scale that is, the insect becomes hardened and scale - like, but has no scale separable from its body. But the Diaspinae are small soft insects, in the adult 9 stage without legs and unable to move, which secrete a scale separate from themselves, much like the shell of an oyster. With a lens it is easy to make out the insect and its scale, the latter having first been overturned with the point of a knife. The scale, it is further seen, carries the exuviae of the two first stages, or only one if it be a male. Now, then, if we are sure that we have a Diaspine is it an Aspidiotus - the genus of the San Jose scale! In Aspidiotus the female scales are round, or nearly so, and the male scales vary from round to oval, according to the species, but are always of a similar texture to those of the female. 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 San Jose Scale and Its Nearest Allies written by Altus Lacy Quaintance and published by . This book was released on 1897 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The San Jose Scale Its Occurrences in the United States with a Full Account of Its Life History and the Remedies to be Used Against it written by Leland Ossian Howard and published by . This book was released on 1896 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The San Jose Scale in 1896 1897 written by Leland Ossian Howard and published by . This book was released on 1898 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Economic Study of the San Jose Scale written by Charles Goodrich Woodbury and published by . This book was released on 1906 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report of the Entomologist written by United States. Bureau of Entomology 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 Annual Reports of the Department of Agriculture for the Fiscal Year Ended June 30 1897 written by and published by . This book was released on 1897 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Reports of the Department of Agriculture for the Fiscal Year Ended written by United States. Department of Agriculture and published by . This book was released on 1898 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains administrative report only.

Download or read book Economic Entomology written by and published by . This book was released on 1917 with total page 1612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Miscellaneous Results of the Work of the Division of Entomology written by American Association of Economic Entomologists and published by . This book was released on 1897 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: