162 NOTES AND COMMENT 



The rapidly growing list of books in the Rural Science Series, which 

 is being edited by Prof. L. H. Bailey and published by the Macmillan 

 Company, has been recently augmented by the appearance of a hand- 

 book entitled Strawberry-Growing, by Prof- S, W. Fletcher, of Penn- 

 sylvania State College. All of the practical aspects of strawberry 

 culture are given thorough treatment. The books on horticulture 

 which c'id such good service a generation ago — as, for example, Peter 

 Henderson's Market Gardening for Profit — gave one set of recommen- 

 dations and cautions for all users of the book. Professor Fletcher's 

 book is hke others in the same series in giving specific attention to the 

 distinct requirements of strawberry culture in the different parts of 

 the United States and Canada. 



A bulletin of the Agricultural Experunent Station at Amherst, 

 Mass., prepared by Prof. George E. Stone, treats the selection, plant- 

 ing, diseases, and care of shade trees in an exceptionally thorough man- 

 ner. The methods of tree surgery are fully explained and some in- 

 teresting facts are brought out regarding the direct and indirect injur- 

 ies caused to trees by electric currents and arc lamps. It is to be 

 hoped that the newer states will learn to emulate the painstaking care 

 that has long been given shade trees in New England. 



Dr. N. M. Fenneman has recently published a map of the physio- 

 graphic divisions of the United States (Annals of the Association of 

 American Geographers, Vol. 6). The map shows divisions of three 

 orders and is accompanied by a full discussion of the features that 

 have been used as a basis for the demarcation of these areas. The 

 map and text constitute the report of a committee of five men ap- 

 pointed by the Association of American Geographers to carry out this 

 work, which possesses importance in many branches of biological 

 investigation. 



A Dictionary of Plant Names has been prepared by H. L. Gerth 

 van Wijk and published b}^ Martinus Nijhoff, of the Hague. The 

 two volumes give cross references involving the Latin names and the 

 names in Dutch, Enghsh, French, and German. 



