An Annotated List of the Important North American Forest Insects (Classic Reprint)


Book Description

Excerpt from An Annotated List of the Important North American Forest Insects Little in the way of investigation of insects affecting shade and ornamental trees and hardy shrubs Is done at the present time, and most of the effort in this work is expended in service. There is a great and increasing demand from municipal authorities, estate owners and managers, small property owners, tree surgeons, and nurserymen for advice on methods of handling their entomological problems. The division of forest insects attempts to meet this demand by correspondence, publications, and occasional surveys and studies. Whenever possible, observations are made on important species and, where practical, experiments in methods of control and improvements in such methods are conducted. 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.




An Annotated List of the Important North American Forest Insects


Book Description

Excerpt from An Annotated List of the Important North American Forest Insects: May, 1930 This list includes those species Of forest insects which are of the greatest economic importance at the present time. In the discussion of each species the common and technical names are given. There is added some information on the occurrence of the insect, the char acter of damage or notable epidemics, and the most important or available references to it in literature. For the convenience Of those not acquainted with the systematic classification Of insects, the species listed have been arranged in groups according to the type of damage, such as bark beetles, leaf feeders, etc., and these groups are further subdivided as necessary. 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.




An Annotated List of the Important North American Forest Insects


Book Description

The investigations by the United States Government of the insects affecting forest trees, forest products, and shade trees are centered in the division of forest insects of the Bureau of Entomology. The investigations carried on by the division are grouped for administrative convenience into projects, the most important of which are briefly described in the following paragraphs.
















An Enumeration of the Published Synopses, Catalogues, and Lists of North American Insects


Book Description

Excerpt from An Enumeration of the Published Synopses, Catalogues, and Lists of North American Insects: Together With Other Information Intended to Assist the Student of American Entomology The preparation Of the titles was originally placed in charge of Mr. B. Pickman Mann, but was in such shape when he left the Office as to require almost entire rewriting. This has been mainly done by Mr. E. A. Schwarz, though other members Of the Divisional force have assisted. 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.




Key to the Families of North American Insects


Book Description

Excerpt from Key to the Families of North American Insects: An Introduction to the Classification of Insects More than fifty thousand different species of insects are now known from North America. Their descriptions fill libraries and their final identification requires the knowledge of specialists. Obviously no single volume can provide for their determination. But this host of species is divided into groups of related forms, the families of insects, and it is with their recognition that the present work deals. Identification of the families has been effected by means of analytical keys, which have been arranged as dichotomies. In the first couplet, for example, two contrasting descriptions are given, one of which should agree with the insect to be determined. The number at the end of this description indicates the couplet which should then be studied, and so on until the final name is secured. All of the keys have been arranged in this way, as the writers' experience in the classroom shows that specimens can be most easily and rapidly classified with a key of this type, which also requires much less space for printing. While the dichotomies frequently represent the natural relationships or the lines of phyletic development, no attempt has been made to preserve natural divisions wherever the convenience and practical Opera tion of the keys would have been sacrificed. 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.