Excerpt from Elements of Biology: A Practical Text-Book Correlating Botany, Zoölogy, and Human PhysiologyIf the work begins with the spring term, the introductory chap ters may be taken, then the seed and seedling, root, stem, leaf, ¿ower, and fruit, reserving the treatment of the cell, simple plants, and the bacteria until the end of the term. This allows taking up the thread in the fall where it was dropped, with an introduction through the balanced aquarium and the hay infusion to the rela tions existing between plants and animals. The best order of topics in the fall seems to be. Protozoa, some simple metazoan, insects (taken while living insects may still be obtained), then such other groups of invertebrates as desired, the year's work again culmi nating with the vertebrates and biology as applied to the human animal.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.