Excerpt from The Frog: A Laboratory Guide The frog needs no introduction to the zoological labora tory, where it has assisted many generations of students in acquiring their first knowledge Of vertebrate anatomy. As Professor Holmes writes in his Biology of the Frog, They are nice clean animals, easy to dissect and admirably fitted for physiological experimentation. In most localities they are easily collected and may be kept in the laboratory alive. All dealers in biological sup plies handle them both alive and preserved. Natural sources of supply are being augmented constantly by the development of frog-hatcheries to supply the commercial demand. The literature dealing with the frog is voluminous. No attempt is made in this guide to indicate more than a few of the books dealing with the anatomy of the frog which may be useful in supplementing this brief sketch. It has been held by some that the function of a laboratory guide is to ask the student what he finds instead of telling him what he is to find, but, in the experience of many teach ers, the problem type of laboratory manual is apt to waste the time of both instructor and student, and wear out the patience of both. It is the writer's opinion that the needs of the beginning anatomist are best served by presenting him with a straight-forward account of what he is to find in the specimen he is dissecting. If he encounters an anomaly or discovers the writer in a slip, he may be referred to larger manuals and to original contributions, and taste for himself the joys and hardships of research. 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.