210 



sidered to be dew" (p. 170). It would seem that the word, dew, 

 might better be left in its general connotation to cover all examples 

 of wet lawns, etc., occurring without visible precipitation. The 

 review would extend his cervical region to the extent of expressing 

 the opinion that most cases of wet feet incurred on summer morn- 

 ings are the result of "botanical dew," not of "physical dew." It 

 is realized that this opinion does not seem to be widely held, but 

 that, it is suggested, is merely because botanists have accepted the 

 physicists' word for it. 



In these references to minutiae, there is no wish to withhold 

 from the Meyer and Anderson a due meed of praise as a scholarly, 

 comprehensive, and valuable text which seems certain of wide 

 use and approval. 



Rocky Mountain Trees * 



Arthur Harmount, Graves 



Reliable floras of any given region are always welcomed by the 

 herbarium student, the trained taxonomist, or by the traveller who 

 is botanically minded. In my own travels in this country and in 

 Europe, I have often wished for books of this sort to which I could 

 turn in time of need. 



Although authoritative floras of the Rocky Mountain region 

 are available, up to the time of the publication of "Rocky Mountain 

 Trees" there has been none devoted exclusively to the trees of the 

 region; in particular none which treats of them with regard to 

 their silvical and ecological, as well as their purely botanical, or, 

 rather, their morphological characters. 



As the author states, "public interest in trees and forests has 

 increased greatly in recent years." It appears that this interest is 

 being steadily maintained, with a regularly mounting curve, and 

 that, therefore, with the passing years, there will be an even 

 greater demand for books of this kind. 



* Rocky Mountain Trees, A Handbook of the Native Species, with. Plates 

 and Distribution Maps. Richard J. Preston, Jr. Iowa State College Press. 

 1940. $2.00. 



