322 Sierra Club Bulletin. 



BOOK REVIEWS. 



Edited by William Frederic Bade. 



An organization that is doing valuable work 

 " Check-List of Fadfic Coast is the Cooper Ornith- 



California Birds, ^i^^^^^i club. Its leading spirit is Joseph 

 Grinnell. It would be hard to find any one in California who has 

 a more intimate or a more accurate knowledge of its avifauna. 

 This Check-List of California Birds* makes no claim to be ex- 

 haustive, but it is safe to say that important omissions are few. 

 No description of species is attempted, but the range and prin- 

 cipal places of occurrence are given. To the Sierran already 

 familiar with the various species of birds this list will prove 

 useful for reference and for the purpose of keeping count. A 

 shorter list of birds of the Sierras, prepared by the late Chester 

 Barlow, is also among the publications of the Cooper Ornith- 

 ological Club, and may still be obtainable. 



The distribution of animals and plants is governed chiefly 

 by the two factors of temperature and humidity. To make clear 

 this principle in its application to the California avifauna the 

 author has added two maps of the State, the one presenting 

 the four principal life-zones on the basis of isothermic areas, 

 the other giving the faunal areas on the basis of isohumic areas. 



The check-list is an excellent piece of work, and reflects 

 credit on the author as well as the club whose membership has 

 helped to gather and verify the information. W. F. B. 



^ ^ We are indebted to the author. Professor 



* Plans FOR Obtaining ^ ^ , ^ ^ , . 



Grove Karl Gilbert, for a copy of this 

 Subterranean . . , • ^ j r 



„ interesting monograph, reprinted from 



Iemperatures. Year Book No. 3, Carnegie Institute of 



Washington. It fully covers reasons for the desirability of the 

 information sought, and outlines plans proposed for the inves- 

 tigations, and progress made. E. T. P. 



* Pacinc Coast Avifauna, No. 3 : Check-List of California Birds. By 

 Joseph Grinnell. Published by the Cooper Ornithological Club. Price, 

 75c. Address the author at Pasadena, California. 



