274 NOTES AND COMMENT 



Forestry Association and the Pennsylvania Department of Forestry, 

 a fine collection of views illustrating Pennsylvania vegetation was 

 secured. Illustrations from the Annual Reports of the Missouri Botani- 

 cal Garden, from duplicate scientific memoirs, obtained from various 

 botanists, have been incorporated. Much assistance has been given by 

 Henry Troth, Charles Gilchrist, 0. F. Cook, Roland Harper, G. N. Col- 

 lins, J. N. Rose, T. L. Garrison, H. L. Shantz, D. T. MacDougal, Silas 

 Schumo, Genji Sato Nakahara, and many others. 



The photographs and other illustrations thus obtained have been 

 arranged in the volumes in the sequence of the phytogeographic regions, 

 districts, and areas as set forth in the writer's Phytogeographic Sur- 

 vey of North America, so that each volume of illustrations has headings 

 appropriate to its contents. It is hoped that these volumes will aid the 

 future student of North American vegetation in his literary and research 

 work, and will remain as a permanent record of the vegetation of the 

 country when the present generation of botanists will have ceased from 

 their earthly tasks. 1 — John W. Harshberger. 



Professor Bruce Fink and Mr. Vernon Lantis, of Miami University, 

 have published a short paper in The Ohio Naturalist, describing some of 

 the principal environic conditions for vegetation in south-western Ohio 

 in the growing seasons of 1908 and 1909. The former year was marked 

 by a pronounced drought, and the latter by much more than the normal 

 rainfall. Comparative climatological data for these years are given, 

 covering rainfall, temperature, evaporation, and soil moisture. The 

 vegetational conditions for the two seasons are contrasted through 

 descriptions of the weed floras of the two years, of the comparative 

 abundance of fungi and other common cryptogamic plants, of the con- 

 dition of shade trees on soils of different depth, and through statistics 

 of the yields of leading crops. 



In spite of the fact that this piece of work might have been carried out 

 with much greater completeness, the authors deserve commendation 

 for having conceived an investigation of this kind, and having given 

 it so many suggestive ramifications. It seems to be axiomatic in botany, 

 just as in all other fields of human endeavor, that the ground which has 

 been broken will soon attract many hands to its cultivation. It is very 

 much to be hoped, therefore, that Professor Fink will soon have many 

 imitators, studying those aspects of the correlation between climate and 



* 



1 Read before the American Philosophical Society, April 19, 1912. 



