1918] HORTICULTURE. 343 



of yielding ability. High grain yields were not associated with a very high 

 proportion of straw, but neither were they correlated with a very low propor- 

 tion. The results seem to indicate that as between plants of the same variety 

 gross yield is sufficient to determine tlie most productive plants for grain. 



Seed Reporter (U. S. Dept. Agr., Seed Rptr., 1 {1911), No. 1, pp. 4).— This 

 marks the initial issue of a monthly publication dealing with material that 

 may arise from time to time relative to the production, handling, and market- 

 ing of seeds, including the following subjects : Seed crop movement ; receipts, 

 shipments, and imports of seeds ; available supplies, demand, prices, and qual- 

 ity of seeds ; commercial varieties of seeds ; special crop reports ; seed market- 

 ing and seed crop studies ; crop estimates ; reports of the seed stocks committee ; 

 and miscellaneous news items deemed of interest and value to seed growers 

 and dealers. 



The current number includes a brief outline of the purposes and activities 

 of the committee on seed stocks, special articles on the storage ^f seed wheat 

 in the Northwest, the seed-corn situation in the Northwest, and the soy-bean 

 situation in eastern North Carolina. Statistics are presented on marketing and 

 production surveys of timothy in Iowa, Minnesota, Missouri, and Illinois ; on 

 alfalfa in Kansas; Kentcky bluegrass In Kentucky; redtop ; orchard grass 

 in Kentucky and Indiana ; clover seed in Wisconsin and Minnesota ; movements 

 of meaodw fescue ; and on imports of forage-plant seeds permitted entry into 

 the United States. 



A seed key to some common weeds and plants, E. L. Palmeb (Proc. loiva 

 Acad. 8'et.. 23 {1916), pp. 335-39^, flgs. ^i).— Seeds of 118 common weeds and 

 plants, many of which occur as adulterants in the seed of red, white, and alsike 

 clovers, alfalfa, timothy, and redtop, are de.scribed, and a key provided for their 

 identification. The object of the work is to furnish a method for accurately 

 determining the names of various seeds and seedlike fruits, with the express 

 purpose of detecting adulterants in commercial seeds, to aid in determining 

 plants in the fruiting condition when tlie flower parts are too far advanced 

 for the usual identification methods and to serve as a check in determinations 

 from a study of the flowers. A brief bibliography of literature relating to seed 

 study is included. 



HORTICULTURE. 



Vegetable forcing, R. L. Watts {New York: Orange Judd Co., 1917, pp. 

 XX+431, flgs. 156). — A practical treatise on vegetable forcing. The first part 

 of the book discusses greenhouse construction and heating ; soils ; manures, 

 lime, and fertilizers ; soil preparation ; soil sterilization ; insect enemies and 

 their control; diseases and their control; starting plants; watering, heating, 

 ventilating, and shading ; and marketing. Separate chapters then deal with the 

 history, importance, and methods of forcing asparagus, rhubarb, lettuce, cauli- 

 flower, radish, tomato, cucumber, muskmelon, and miscellaneous vegetables. 

 Systems of cropping, the management of frame crops, and mushrooms are also 

 discussed. 



The work as a whole is based upon commercial practice and the recent litera- 

 ture of the subject. 



The California vegetables in garden and field, E. J. Wickson {San Fran- 

 cisco: Pacific Rural Press, 1917, 4. ed., rev. and enl., pp. 319, pis. 23, figs. 6). — 

 The present edition of this work (E. S. R., 29, p. 435) is revised and extended 

 to include recent practice in vegetable growing. 



Vegetable growing, G. Teuffaut {Produisez des Legumes. Versailles, 

 France: Author, 1917, pp. 128, pi. 1. flgs. 47).— A cultural treatise including a 

 monthly working calendar, prepared with special reference to French conditions. 



