442 EXPERIMENT STATION RECORD. 



of solids, sugar-free solids, sugar as invert, and acid as tartaric. Siiuilar data 

 are given for a smaller number of Virginia Piedmont grapes, analyzed at 

 Charlottesville, Ya. 



As is the case in every grape-growing country, it has been found by these 

 investigations that the character of the grape varies from season to season and 

 often in the same vineyard or locality during a given season. In addition to 

 furnishing tentative conclusions respecting the general character of the fruit 

 produced with special reference to the sugar and acid content, it is believed 

 that the data in hand will render possible more detailed investigations of certain 

 specific features, such as the variability in composition of the more important 

 varieties under different conditions of soil, climate, and culture. 



Fruit modeling', Truelle and P. Masseron (Bui. Soc. Nat. Agr. France, 71 

 {1911), No. 8, pp. 73S-7//9). — This comprises a historical sketch of fruit model- 

 ing, together with a description of the methods used by the junior author in 

 making fruit models. 



Grafting and propagating plants, W. H. Alderman (New Yoik State Sta. 

 Circ. 17, pp. 8, pis. '/). — Popular directions are given for propagating plants by 

 means of graftage, buddage, cuttage, and layerage. 



FORESTRY. 



New Eng'land trees in winter, A. F. Blakeslee and C. D. Jarvis {Connecti- 

 cut Starrs Sta. Bui. 69, pp. 305-576, pis. Ill, figs. 8). — This bulletin comprises 

 a guide to the winter identification of trees, for the most part growing wild in 

 New England but also including some of the more frequently cultivated trees 

 which are of value either for forestry or for ornamental planting. A list of the 

 more important books of value to the student of New England trees is included. 



An analytical key to the genera and species precedes the descriptions. The 

 order of arrangement of the species and the scientific names follow the usage 

 of the seventh edition of Gray's Manual. The individual si>ecies are described 

 relative to habit, bark, twig, leaf scar, leaves, buds, fruit, distinctive character- 

 istics, distribution, and wood. The illustrations, which form an important 

 feature of the work, include photographs of the whole tree in winter, the trunk, 

 twigs, and fruit. Inasmuch as New England forms the meeting ground" for 

 many species of both the northern and southern floras, the descriptive text 

 and illustrations are of value outside of the geographically restricted region 

 described. 



In connection with the height measurement of trees, a homemade modifica- 

 tion of an expensive hypsometer is illustrated and described. 



The American woods, exhibited by actual specimens and with, copious 

 explanatory text, XII, R. B. Hough {Lowville, N. Y., 1911, pp. F/Z+G^, wood 

 sections 75). — The present volume contains sets of wood sections of 25 additional 

 species of the Atlantic and Central States, each set comprising a transverse, 

 radial, and tangential section (E. S. R., 23, p. 73G). The specimens are accom- 

 panied by a systematic description of each species represented, including its 

 botany, physical properties, and the uses of the wood. An index to the whole 

 series to date is also included. 



Trees, forestry, and lumbering {Brooklyn, N. Y., 1911, pp. ^0).— A list of 

 books and of references to periodicals in the Brooklyn Public Library. 



A confusion of technical terms in the study of wood structure, C. D. Mell 

 {Forestry Quart.. 9 {1911), No. 4, pp. 57-^-576).— The author presents a list of 

 names used for the same elements and makes an appeal for the adoption of 

 uniform terminology. 



