20 THE AMERICAN BOTANIST. 



seeds and plants, and why plants find it desirable to 

 migrate from place to place. There are sixty-six illustra- 

 tions. An excellent feature of the book is the mention of 

 many plants in each section besides those treated which 

 the student can investigate for himself. Both these books 

 are worth a place in the library of the botanist and will be 

 especially useful to teachers of Nature stud}'. They are 

 published by Ginn & Co., Bostoti. 



The poet has called butterflies "winged flowers" and 

 thus these insects should come in for a share of the botan- 

 ist's attention. There is probably no branch of science that 

 is nearer to ecological botany- than entomology, in fact, if 

 it were not for the insects we should soon be minus our 

 showy wildflowers,and dependent upon the clumsy make- 

 shifts of the gardener for many of our finest fruits and 

 vegetables. There are few botanists that are not ento- 

 mologists to the extent of knowing the most noticeable 

 bees, butterflies and moths, at least, and none that should 

 lack this information. We take pleasure, therefore, in 

 recommending Comstock's "How to Know the Butter- 

 flies" to those who would get acquainted wnth these 

 insects. The forty-five plates in this book representing the 

 butterflies in their natural colors are of themselves nearly 

 sufficient for the identification of the various species, but 

 these are supplemented by an accurate and comprehensive 

 text in which the caterpillar as well as the mature insect 

 is described and the food plants mentioned. Under each 

 species is also given much matter of a popular nature in 

 regard to hibernation, migration, protection, mimicry and 

 other interesting facts in their life histories. The book 

 contains three hundred pages of text with numerous illus- 

 trations. It is quite the best book we have seen on the 

 subject. (New York: D. Appleton & Co., 1904, $2.25 net.) 



