AMERICAN ORNITHOLOGY. 227 



NEW BOOKS OF INTEREST TO BIRD STUDENTS 



A First Book on the Birds of Oregon and Washington, (J. H. Gill 

 Co., Portland, Oregon,) by William Rogers Lord. "A Pocket Guide 

 and Pupil's Assistant in a Study of the more common Land Birds and 

 a few of the Shore and Water Birds of these states." Mr. Lord is an 

 entertaining writer, and his knowledge of his subject has been acquired 

 by a close companionship and study, in the field, of the birds in the 

 states of which his book treats. Mr. Lord's object primarily, was to 

 produce a book that would be of the greatest interest and value to 

 beginners in the study of birds, but as is frequently the case, most of 

 those who think they "know it all" can learn much from a perusal of 

 its pages. It is a book of 300 pages and is of convenient size for the 

 pocket. (4x6 in.) 



Wild Birds in City Parks, (A. W. Mumford, Chicago), by Herbert 

 Eugene Walter and Alice Hall Walter. Paper, 40 pages, 25 cents. A 

 descriptive list of one hundred birds which are seen in Lincoln Park, 

 Chicago, during the spring migration. This is a valuable list for those 

 who reside in that section of the country, and also useful in most lo- 

 calities east of Chicago as the bird life is nearly identical. 



Preliminary List of Birds of Boulder county, Colorado, by Junius 

 Henderson; published by the University of Colorado, Boulder. This is 

 strictly a preliminary list and is not considered to be complete. It 

 records one hundred and sixty species. 



Quailology, by Harry Wallas Kerr, Little Sioux, Iowa. In this 

 volume, Mr. Kerr, who is secretary for the National Quail Breeders 

 Association, has presented the methods, pleasures and difficulties of 

 quail culture, with the hope that it will serve to stimulate others to 

 preserve the game birds by propagation, as well as to aid those who 

 are now making the attempt. 



ANSWERS TO CORRESPONDENTS. 



J. A. C. — Your trouble in photographing nests and eggs is the same 

 as that of a great many others who send us pictures. You are using 

 your camera with the lens wide open, whereas it must be stopped 

 down to at least f64 to get the requisite depth of focus. I note that 

 you say the maker of the lens claims that it has an unusual depth of 

 focus; that is claimed for all makes of lenses, whereas it is a quality 

 that is in no wise dependent upon the maker, being governed entirely 

 by the relation of the diameter to the focal length. To get good pic- 



