80 Bulletin of the 



then pursue their flight to another the next night, nor do they necessarily 

 fly throughout the entire night and then stop at the firM convenient place in 

 the morning. The simple truth here is that birds fly as far during one 

 night as they find convenient, the distance being determined by immediate 

 environmental influences." 



While the paper gives us considerable data of interest, recording work 

 apparently earnestly and conscientiously done, it seems that the deductions 

 are hardly proportionate to the length, especially of the first two chapters. 

 In form the paper also leaves much to be desired, especially in the matter 

 of citations, while other evidences of lack of care, composition and proof- 

 reading are not lacking. In the matter of citations it is a great convenience to 

 one wishing to refer to the article quoted to have the reference full and 

 clearly comprehensible, while uniformity in style throughout the same 

 paper is greatly to be desired, and accuracy should not be sacrified for any 

 other consideration. A single example in which these points have not been 

 considered will suffice: Mr. Brewster's paper on Bird Migration is cited 

 in three places as having been published in the Bulletiii of the Nuttall 

 Ornithological Club, and in three other places as in the Memoirs of the 

 same society; in two cases the date of publication is given as 1885, in two 

 as [886, and in the remaining two it is not mentioned at all. Two or three 

 other slips may be mentioned : The second sentence on page 198 makes 

 no sense as it stands; altering either one of two words will give it sense, 

 but different meanings result according to which is changed. The figure 

 on page 199 is inverted from its position in the instructions sent out by the 

 author, and as it stands makes difficult an understanding of the instructions 

 on the opposite page, as well as the interpretation of the plates which 

 follow. Again, the diagram on Plate TV for "8:15 to 8:30" should read 

 "8:00 to 8:15," as by turning to p. 234 it will be seen that no observations 

 were made during the former period. 



On the whole, Mr. Winkenwerder's contribution is a valuable accession 

 to the steadily increasing data on migration, and indicates a line in which, 

 by concerted effort, many side-lights, at least, may be thrown upon an 

 interesting and puzzling problem. L. J. C. 



Birds in Their Relation to Man. A Manual of Economic Ornithology 

 for the United States and Canada. By Clarence M. Weed and Ned 

 Dearborn. Philadelphia and London. J. B. Lippicott Company, 1903. 

 12 mo. viii-l-380 pages. Numerous illustrations. 



The Topographic Survey of Michigan. By Israel C. Russell (Pres. Mich. 

 Academy of Sci. for 1902-03). Printed for the Academy, Ann Arbor, 

 Mich., 1903. 



Xat. Comm. of Audubon Soc. Education Leaflets. By Wm. Dutcher. No. 

 4 The Robin, No. 5 The Flicker. New York City. T903. 



Am. Ornithology, ITT. Nos. 7, 8, 9, July, Sept., 1903. 



Atlantic Slope Naturalist, I. No. 3, July-August, 1903. 



Auk, XX. No. 3. July, 1903. 



Bird-Lore, V. No. 4, July-August, 1903. 



Condor, V. No. 4, July-August, 1903. 



Journal Maine Orn. Soc. V. No. 3, August, 1903. 



Recreation, XVIII. Nos. 6, 7, 8, July, Sept., 1903. 



