402 ENTOMOLOGICAL NEWS. [NOV. , '07 



I wish to report an immense army of migrating Anosia Plexippus 

 (Linn.) that passed through here this afternoon (Oct. 4th), going 

 southward. The swarm of butterflies was about one and one-fourth miles 

 wide, and I do not know how long, as they had been flying past for 

 some time before I saw them, they continued to fly for about fifteen 

 minutes after I saw them. 



The majority were flying at about the height of the telegraph wires. 



Occasionally one or two would drop from the main army and settle 

 in the mud of the street for a few moments — possibly for refreshments — 

 and for a while there were hundreds in the streets, but within a half 

 hour they were all gone. 



Their flight was not a swift one but was very steady. They had the 

 appearance of being weary, for they would fly for a short while, then 

 soar. 



There were probably millions in this swarm and I could not help com- 

 paring them to the flights of the passenger pigeons of which I have 

 read. — B. R. Bales, Circleville, Ohio. 



Prof. C. F. Baker wishes to announce that his address after Noverfi- 

 ber 1, 1907, will be Museu Goeldi, Para, Brazil, and that all letters and 

 packages should be forwarded to him at that point. — C. F. Baker. 



Entomological Literature. 



Evolution and Animal Life. — An Elementary Discussion of Facts, 

 Processes, Laws and Theories relating to the Life and Evolution 

 of Animals. By David Starr Jordan, President of Leland Stanford 

 Junior University, and Vernon Lyman Kellogg, Professor of Ento- 

 mology and Lecturer in Bionomics in Leland Stanford Junior 

 University. New York : D. Appleton & Co. 1907. nmo. pp. 

 xi, 489. 298 figures in the text, and three colored plates [of birds]. 

 Cloth, $2.50 net. 

 In a prefatory note the authors say : " The book is composed primarily 

 of the substance of a university course of elementary lectures delivered 

 jointly by the authors each year to students representing all lines of col- 

 lege work the authors feel that the interested general reader will 



find this small volume a fairly comprehensive introduction to our present- 

 day knowledge of the factors and phenomena of organic evolution." 



The following list of the titles of the chapters will show the order and 

 manner in which evolutionary themes are treated. I. Evolution Defined ; 

 II. Variety and Unity in Life ; III. Life, its Physical Basis and Simplest 

 Expression ; IV. Factors and Mechanism of Evolution ; V. Natural 

 Selection and Struggle for Existence : Sexual Selection ; VI. Artificial 



