Excerpt from Laboratory and Field Tests of Toxicity of Some Organic Compounds to the European Corn BorerAs insecticidal control of the corn borer is directed at the young larvae, it having been found extremely difficult to poison the larvae in their later instars, newly hatched larvae were utilized in all laboratory tests reported herein.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.