30 THE AMERICAN BOTANIST. 



forest in the winter rain belt, the abundance of marine plants 

 and animals, its constant use of the dredge, and its small 

 fees ($13.00). Under the direction of Dr. T. C. Frye, of the 

 Department of Botany of the University, a field-trip to 

 Alaska will be made about July 1st, the party going as far 

 north as Skagway and staying about six weeks. Those who 

 make this trip and carry on the required work will receive 

 the same credit as if they did the work in the University. 



The second edition of Green's "Vegetable Physiology" 

 presents few differences from the original issue, but the ap- 

 pearance of the new edition may well direct attention anew to 

 the scope and general excellence of the work. Unlike many 

 texts in which the divisions of vegetable physiology are treated 

 topically with often very little apparent relation between the 

 parts, there is in this book a continuous connecting line of re- 

 lationship built up bit by bit from the first chapters on the 

 general structure of plants and the differentation of the plant 

 body to the nervous mechanism of plants and reproduction at 

 the end. Between these topics there are twenty-one others 

 dealing with the skeleton of plants, the relation of water, air, 

 and food to the plant, methods of obtaining food, the storage 

 of food, digestion, growth and the influence of temperature 

 and environment on plants. Teachers, and others, interested 

 in the physiology of plants will find the lucid account of the 

 subject very attractive. The book contains 450 pages and 

 nearly 200 illustrations. It is published by P. Blakiston's Son 

 & Co., Philadelphia, at $3.00 net. 



The recently issued "Elements of Biology" by George 

 William Hunter is an excellent example of a book written to 

 order. It follows closely the "Syllabus for Secondary 

 Schools" prepared by the New York State Education Depart- 

 ment, but it may safely be predicted that if New York State 

 pins her faith to such a mixture under the guise of biology her 



