154 EXPERIMENT STATION RECORD. 



is primarily addressed to readers wlio liave little or no botanical training, but who 

 may wish to learn the names of the trees and the characters by which they may be 

 recognized, as well as the main facts as to their occurrence and distribution in the 

 State. ... It is especially to the children of Vermont, and to the teachers of these 

 children, either at home or in school, that it is hoped this publication will prove 

 most interesting and most useful." 



The bulletin contains descriptions of 97 species, representing 18 families. Each 

 species is illustrated by original drawings. 



Drawing's of the forest trees of Japan, H. Shirasawa {Iconographie des essences 

 forestieres du Jupon. Tokyo: Minister of At/riadture and Commerce, 1900, ph. 88). — This 

 is a collection of carefully drawn colored plates of about 150 arborescent species of 

 Japan, showing the flowering and fruiting branches, dissections of flowers and seeds, 

 bark, transverse, radial, and tangential sections and magnified specimens of the wood. 



The identification of timber, D. F. Mackenzie {Trans. Highland and A gr. Soc. 

 Scotland, 5. ser., 12 {1900), pp. 183-224, figs. <?,?).— Illustrated descriptive notes are 

 given upon the timber of 63 species of trees. Photomicrographs of transverse and 

 tangential sections of most of the species are given, and the principal structural and 

 physical characters of each kind of timber are described. 



DISEASES OF PLANTS. 



A fruit-disease survey of the Hudson Valley in 1899, F. C. 



Stewart and F. G. Blodgett {N'ew York State Sta. Bui. 167^ j^P- 

 275-308^ pis. If).- — A report is given on the distribution and amount of 

 damage done by fungus diseases in the Hudson Valley during 1899. 

 The season was an unfavorable one for the development of parasites, 

 and on this account diseases usual 1}^ ver}^ common and destructive did 

 little or no damage. The data presented in this bulletin were secured 

 bv circulars of inquiry and personal observations b}' the authors. 



The diseases mentioned are: Apple diseases — scab, leaf spot, twig 

 blight, canker, sooty blotch, russeting of fruit, rust, and sun crack. 

 While all these diseases were observed, the apple crop was in no way 

 injured by anj" of them. Blackberry diseases — orange rust and leaf 

 spot, the orange rust having been rather destructive. Cherry dis- 

 eases — fruit spot, leaf spot, black knot, witches- brooms, powdery 

 mildew, and winter injury. Currant diseases — leaf spot and cane 

 blight, both of which were somewhat destructive. The statement is 

 made that the currant-cane blight occurring in the Hudson Valley is 

 not caused b}- Nedrui cinnalxirlna but l\y a sterile fungus. The exact 

 proof of this fact by inoculation experiments is lacking, but the occur- 

 rence in a large number of cases of sterile fungus with the disease 

 is considered sufficient proof. Gooseberrv diseases — powdery mil- 

 dew, root rot, and a dwarfed condition of the foliage which is not 

 ascribed to any particular cause. The root rot has been known for a 

 numl)er of years in one locality and is graduallv spreading. It is said 

 to be due to Dematophora. Grape diseases — black rot, downy mil- 

 dew, root rot, chlorosis, and black knot. The latter disease, while 

 somewhat resembling the black knot of plum and cherr}' due to 



