January 9, 1914] 



SCIENCE 



71 



but it might have been better to have com- 

 pleted the account of each of these groups by 

 itself and to have added a short chapter on 

 the similarities due to convergence. 



This very summary description of the con- 

 tents of Eeuter's work unfortunately fails to 

 give any adequate conception of the large 

 amount of very interesting and valuable read- 

 ing it contains. As the first work to give a 

 comprehensive survey of the habits of the 

 solitary insects it is eminently successful. 

 The writer has collated the essential facts from 

 a very wide perusal of both the older and most 

 recent literature on insect ethology, and has 

 presented the matter in a very succinct and 

 attractive style. 



The volume ends with a well-selected bibli- 

 ography of 60 pages and a good index. The 

 bibliography includes many recent works on 

 the social insects not cited in the text. There 

 are few erroneous statements of fact like the 

 one on p. 365, where it is said that ants ap- 

 peared " in grossen Massen " in the Jurassic, 

 immediately following the correct statement 

 that " the existence of social Hymenoptera 

 can not be demonstrated till Tertiary times." 

 In the same paragraph we find the erroneous 

 statement that termites occur in the Carbonif- 

 erous. 



The cuts in the text are mostly old, unat- 

 tractive and poorly printed. Some of them set 

 one to wondering why there are no good figures 

 of many of our common insects, and why our 

 author should be compelled to use, e. g.j the 

 time-worn figure on p. 32 of the Cicindela 

 larva, which is so small compared with its 

 burrow that it could not possibly use its legs 

 and dorsal horn in the manner described in 

 the text. The number of typographical errors 

 is considerable and many of them have not 

 been corrected in the two pages of errata at 

 the end of the volume. If it be true, however, 

 as the reviewer is informed, that Eeuter was 

 blind for several years before his death, all of 

 these errors and the poor selection of figures 

 may be readily explained and pardoned. 



W. M. Wheeler 



Mind and Health, with an Examination of 

 some Systems of Divine Healing. By Ed- 



ward E. Weaver, with an Introduction by 

 G. Stanley Hall. New York, The Mac- 

 millan Company. 1913. Pp. xv + 500. 

 Price, $2.00 net. 



The occasion for this book is the recent in- 

 terest of some of the clergy in the practise of 

 psychotherapy. After some account of the 

 history, scientific basis and technique of psy- 

 chotherapy, and a critical discussion of the 

 merits of Christian Science, divine healing, 

 " new thought," the Emmanuel movement, 

 etc., the author reaches the conclusion that 

 the church and its ministers can rightly and 

 beneficially take a share in treating the sick. 

 Religious faith and fervor, he urges, are a 

 source of vitalizing energy which can be 

 drawn upon for the maintenance and restora- 

 tion of health. Character and health go to- 

 gether, and the minister of religion is, there- 

 fore, charged, to a degree, with the care of 

 health. He should be acquainted with the 

 scientific aspects of psychotherapy and should 

 work in harmony with the physician. 



R. S. WOODWORTH 



Labrador. By Wilfrid T. Grenfell and 



others. New edition. New York, The Mac- 



millan Co. 1913. $2.50 net. 



The first edition of this standard work was 

 recognized as a valuable addition to the litera- 

 ture on this practically unknown part of 

 North America. The chapters on history, 

 geology, Indians, birds, insects, mammals, etc., 

 are admirable contributions from recognized 

 experts. 



While the new chapters by Dr. Grenfell have 

 no scientific value, yet they are of popular in- 

 terest, treating of animal life and of conserva- 

 tion. He sets forth pleasantly the lack of 

 daring courage on the part of the bear and 

 wolf, the domestication of the caribou, the 

 food-value of the porcupine, the destructive- 

 ness of the lynx and the wiliness of the 

 wolverine. On animal life he tells of the long 

 winter experiences, when the bears sleep, the 

 rabbits eat young birch, and the porcupine 

 keeps to conifers. He adds : " Strangely 

 enough none of the mammals rely on sight for 

 protection. The difficulty of survival is in- 



