158 



THE AMERICAN BOTANIST 



issued by the editor of this magazine. It is a combined 

 ''Laboratory Notebook and Manual of Botany," space being 

 left after each question for an adequate answer. The book is 

 one of the very few botanical manuals issued on the "loose 

 leaf" plan but is so bound that it may be used with its own 

 covers if the pupil does not care to use a separate notebook 

 cover. The volume deals with the structure and functions of 

 flowering plants with a brief survey of the lower groups, and 

 forms a lucid introduction to agronomy, systematic botany or 

 a study of the spore-plants. Each study is complete in itself, 

 but the work is so arranged that it may be extended or con- 

 densed at any point if the teacher desires. It is published by 

 Ginn & Co., Boston, at 50 cents. 



The study of the laws which underlie heredity in plants 

 and animals and their applications to the new science of 

 Eugenics has progressed so rapidly that even the up-to-date 

 scientist runs some risk of being left behind in such matters. 

 A host of investigators are at work on a variety of problems 

 connected with Mendelism and new results are announced 

 almost daily. Bateson's volume entitled ''Mendel's Principles 

 of Heredity," which sets forth an account of these advances, 

 has been reprinted three times since 1909. The third impres- 

 sion with additions has just appeared and forms a most inter- 

 esting and authoritative volume of some -100 pages. The bulk 

 of the book is concerned with the laws underlying- the heredity 

 of color, this being the line upon which much of the work has 

 been done, probably because of the clearness of the results to 

 be obtained, but other features of the work have not been 

 neglected; in fact, the book is an excellent summary of what 

 has thus far been accomplished, with much information as to 

 how these facts have been discovered and their bearing upon 

 the whole subject of heredity and breeding. A number of 

 black and white figures as well as several colored plates add 

 illumination to the text. The book is an octavo and is pub- 



