Excerpt from Genetics Laboratory Manual It is assumed that the laboratory course will accompany and supple ment a combined lecture and recitation course and this manual is intended in particular to supplement the text-book, Genetics in Relation to Agriculture, by Babcock and Clausen. Although it may seem advisable in some cases to alter the sequence Of laboratory exercises according to the progress of the class in the study of subject matter in the text and lectures, yet it may be found more feasible to assign certain portions Of the text to precede, accompany or closely follow certain laboratory ex croises. Probably the latter would be the wiser plan inasmuch as the laboratory exercises may occasionally have to be shifted in order to take advantage of a certain stage of development in plants or for various other reasons. With these provisions in mind the following series Of exercises are recommended. The exercises referred to here by number will be found in proper sequence in the body Of the manual. It will be remembered that under each number there are three alternatives designated as a, b, and c. If the a series Of exercises is used in 1919, the b series may be used in 1920 and the a series in 1921; or by selecting and rearranging individual exercises an instructor can make up an entirely different course Of one, two or three laboratory periods per week as desired. Cer tain exercises, however, call for material which can hardly be duplicated and it is recommended that they be included in each year's work. Fur ther suggestions and various specific aids to laboratory work will be found in the appendices. 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.