244 NATURE STUDY REVIEW [8 :6— Sept., 1912 



come out so unscientifically disposing of these weighty ques- 

 tions. — C. W. F. 



Butterfly Hunting in Many Lands. By George B. Longstaff. 

 Longmans Green & Co., New York. Pp. xviii -)- 728, $7.00. 



This book is one of those delightful combinations of records 

 of travel and observations of a naturalist that make fascinating 

 reading for any one who enjoys both travel and natural history. 

 The book is a personal narrative and with the author you travel 

 around the world picking up insects under all sorts of interesting 

 conditions, chasing rare butterflies in Ceylon^ and exclaiming with 

 him as you find a rare bettle in South America. Chapter X is 

 a good discussion of butterfly bionomics, while the Appendix con- 

 tains translations of Fritz Miiller's papers on the hair tufts, scent 

 organs and sex spots in certain of the butterflies and moths. The 

 Appendix is illustrated with reproductions of Miiller's original 

 plates. The body of the book contains a number of plates in color 

 giving figures of some of the rarer sorts. It is a book that any 

 "bug hunter" will enjoy on winter evenings when the pleasures of 

 net and cyanide jar are denied him. And even the layman will en- 

 joy many of the accounts of the journeys and strange experiences, 

 although he will probably want to skip some paragraphs that are 

 made up largely of scientific names. Withal it is a delightful 

 book for a naturalist, partakes of the character of the earlier 

 natural histories, and is fascinating without losing its scientific 

 value. 



Sex Hygiene for the Male and What to Say to the Boy. By 

 G. Frank Lydston. The Riverton Press, Chicago, 111. Pp. 304. 

 $2.25. 



A few of the chapter headings will indicate the scope of this 

 work : Methods of Instruction of Youth, 10 pages ; The Lie of 

 the Wild Oats, 6 pages ; Inspection and Regulation of the Social 

 Evil, 6 pages ; Methods of Muscle Building. 12 pages ; Bathing and 

 Massage, 5 pages ; General Principles of Sex Hygiene, 25 pages ; 

 Anatomy and Physiology of the Male Procreative Organs. 18 

 pages ; Diseases of the Procreative Function. 35 pages ; Local 

 Venereal Diseases, 40 pages ; What to Say to the Boy, 18 pages. 

 Dr. Lydston is a physician of wide experience and this book is 

 only one of several which he has written in his endeavor to in- 

 crease the knowledge of sex hygiene and to stimulate higher so- 

 cial ideals. The book is frank, and specific in its recommendations 

 both for the individual and societv. He states his belief on sex 



