294 JOURNAL OF FORE;STRY 



material for this work must come from the National Forest areas at 

 the head of the streams and the forest areas are therefore important 

 from the supply standpoint as well as from absorption and erosion 

 prevention. 



It is interesting to note that Mr. Olmsted, who is a recognized au- 

 thority on water conservation and engineering, believes thoroughly in 

 forestry. He states that "it must be clearly understood that the basis 

 for all of the work proposed for regulating run-ofif and in itself of 

 more importance than any other feature, is the general condition of 

 the watershed ground surface so far as its sod, brush, and timber 

 conditions are concerned." 



While this work will be of greater interest to all who are interested 

 in this phase of forest influences, the book itself is open to some severe 

 criticism. At the present time there is a great cry over the paper 

 situation in the same Senate that issued this volume, and we find the 

 backs of ten pages of plates are bare, twelve more plates have but one 

 reproduction where two or more could easily be placed, and four pages 

 are devoted to printing letters of transmittals which could easily have 

 been printed on half of one page. As the publication measures 9 by 

 12 inches these defects are the more striking. Plate 14 is a picture 1^ 

 by 3><| and Plate 7 is 1>4 by 6 inches, both occupying a whole page. 

 Other defects equally derogatory are the lack of a table of contents 

 and a summary of the necessary work to be done. 



E. N. M. 



Forests, Woods, and Trees in Relation to Hygiene. By Augustine 

 Henry, M. A., F. L. S., M. R. I. A. London, Constable and Company, 

 1919. Pp. 315, illustrated with 49 photographic reproductions, figures, 

 and maps. Price, 18s. 



Professor Henry has done an admirable service for the layman as 

 well as the forester in bringing out the book under review. Although 

 the work is intended primarily for readers in Great Britain and Ireland 

 it can be read with profit by Americans as well. 



At no time in the past have so many people in all civilized countries 

 been interested in the relation of forests to public health and hygiene. 

 Although many pamphlets and articles in journals and magazines deal- 

 ing with one or more phases of this subject have appeared in recent 

 years, Professor Henry has given the English speaking people the 



