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Author : William Lochhead
Publisher : Unknown
Page : 436 pages
File Size : 44,6 Mb
Release : 1919
Category : Beneficial insects
ISBN : LCCN:79006649
Author : William Lochhead
Publisher : Forgotten Books
Page : 458 pages
File Size : 46,5 Mb
Release : 2015-07-20
Category : Science
ISBN : 1331891175
Excerpt from Class Book of Economic Entomology: With Special Reference to the Economic Insects of the Northern United States and Canada Although several most excellent manuals on Economic Entomology have been published in recent years, there seems to be a need for a book providing the necessary information for the student in the class room, laboratory and field along the lines indicated above. This class-book, therefore, has been prepared to meet the needs of the class-room instructor, and his needs have in uenced the mode of presentation of the subject material. It does not presume to take the place of the invaluable and well-known works of Folsom, Comstock, Slingerland and Crosby, and others; but rather, it aims to present such material as will best help the student in acquiring a fair working knowl edge of the modern science of Economic Entomology. 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."
Author : William Lochhead
Publisher : Philadelphia : P. Blakiston's Son
Page : 436 pages
File Size : 40,6 Mb
Release : 1995
Category : Beneficial insects
ISBN : 0665772882
Author : William 1864-1927 Lochhead
Publisher : Legare Street Press
Page : 472 pages
File Size : 50,8 Mb
Release : 2021-09-09
Category : Electronic
ISBN : 1013482913
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 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. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : William 1864 Lochhead
Publisher : Wentworth Press
Page : 464 pages
File Size : 55,5 Mb
Release : 2016-08-25
Category : History
ISBN : 1361276355
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.
Author : William 1864 Lochhead
Publisher : Unknown
Page : 464 pages
File Size : 45,6 Mb
Release : 2016-09-10
Category : History
ISBN : 1360871977
Author : William Lochhead
Publisher : Palala Press
Page : 128 pages
File Size : 44,5 Mb
Release : 2016-05-25
Category : Electronic
ISBN : 1359600426
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.
Author : Anonim
Publisher : Unknown
Page : 776 pages
File Size : 53,9 Mb
Release : 1881
Category : Beneficial insects
ISBN : CORNELL:31924068415078
Author : Anonim
Publisher : Unknown
Page : 382 pages
File Size : 40,8 Mb
Release : 1904
Category : Beneficial insects
ISBN : UCBK:C036639752
Author : Entomological Society Of America
Publisher : Theclassics.Us
Page : 216 pages
File Size : 54,6 Mb
Release : 2013-09
Category : Electronic
ISBN : 123026552X
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 edition. Excerpt: ... the cockroach and the mayfly heralded the oncoming myriads of their congeners which yet endure and probably will endure as long as the world sustains life. One of our entomologists in forecasting the likelihood of the long survival of the insect class breaks forth in the following poetic language: "When the moon shall have faded from the sky and the sun shall shine at noonday a dull cherry red, and the seas shall be frozen over and the ice-cap shall have crept downward to the equator from either pole, and no keel shall cut the waters, nor wheels turn in mills, when all cities shall have long been dead and crumbled into dust, and all life shall be on the very last verge of extinction on this globe, then, on a bit of lichen, growing on the bald rocks beside the eternal snows of Panama, shall be seated a tiny insect, preening its antenna1 in the glow of the wornout sun, representing the sole survival of animal life on this, our earth, --a melancholy 'bug.' "2 The long period through which the Class Insecta has existed has caused it to develop an almost incredible number of species, some among them adapted to every condition of climate and topography on the globe. Excepting the microscopic forms of animals and plants, the number of all other species of living things added together, mammals, birds, fishes, reptiles, animals of whatsoever class, trees and plants total together but a small fraction. of the number of species in the insect world. The number of species is variously estimated at from'2.500,000 to 10.000.000. with the probabilities favoring the latter figure as the more nearly correct. Assuming the maximum figure to be correct, in what a field does the entomologist find himself! Suppose that he attempts to familiarize himself with...
Author : Louis Compton Miall
Publisher : Forgotten Books
Page : 267 pages
File Size : 54,5 Mb
Release : 2015-06-25
Category : Science
ISBN : 1330392078
Excerpt from Injurious and Useful Insects: An Introduction to the Study of Economic Entomology This little book has been written for beginners who are willing to take some pains to acquire a practical knowledge of insects, and are specially interested in the application of entomology to agriculture, horticulture, and forestry. A practical purpose is, in my opinion, not a hindrance but a powerful motive to the acquisition of scientific knowledge. If not too narrowly prosecuted, the practical purpose may be a means of distinguishing knowledge which is really useful from knowledge which is merely curious. I feel sure that it is much more likely to exercise a wholesome influence on natural history than collecting and naming, which have been far too exclusively attended to for many years past. I have tried to meet the wants, not only of those who are concerned with insect-ravages, but also of those who seek to inquire into the works of nature. Injurious and useful insects are as full of contrivance, and as beautifully equipped for the struggle of life, as any others. Since they are among the commonest species, they can be easily and profitably studied by those who have no purpose in view except to enlarge their knowledge of living things. The title of the book has not been so strictly interpreted as to exclude a few insects which are neither injurious nor useful, but either very plentiful or particularly instructive. In my own teaching of economic entomology and other branches of biology, the laboratory work always comes first, and the class-work is only a means of correcting and driving home the instruction of the laboratory. Common insects are provided in large quantities, so that every student is supplied. The rarer ones are exhibited in glazed cases, each of which illustrates a single life-history. The teacher should make his own selection of types, and draw up his own syllabus of work, referring to the text-book wherever a detailed account is required. 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.
Author : Leland Ossian Howard
Publisher : Forgotten Books
Page : 40 pages
File Size : 43,6 Mb
Release : 2017-12-05
Category : Beneficial insects
ISBN : 0332434257
Excerpt from The Economic Status of Insects: As a Class A very recent instance of an international importation of striking value is the sending of Norms cardinalis from this country to Portugal, where the white or fluted scale has been checked and in many orchards ex terminated in the course of a single year. This importation was made by the writer with the invaluable assistance of the Cali fornia State Board of Horticulture. 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.
Author : David W Onstad,Philip Crain
Publisher : CABI
Page : 208 pages
File Size : 50,9 Mb
Release : 2019-09-02
Category : Science
ISBN : 9781786393678
The book begins by establishing an economic framework upon which to apply the principles of IPM. Then, it looks at the entomological applications of economics, specifically, economic analyses concerning chemical, biological, cultural, and genetic control tactics as well as host plant resistance and the cost of sampling. Lastly it evaluates whether the control provided by a traditional IPM system is sufficient, or if changes to the system design would yield greater benefits.
Author : Entomological Society Of America
Publisher : Hardpress Publishing
Page : 602 pages
File Size : 49,8 Mb
Release : 2013-12
Category : Electronic
ISBN : 1314698079
Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Author : United States. Bureau of Entomology
Publisher : Unknown
Page : 470 pages
File Size : 52,7 Mb
Release : 1890
Category : Beneficial insects
ISBN : UVA:X004881149