1918.] HORTICULTUBE. 539 



sanst. DerHkon-ZuricJi, Jahrcsher., 39 (1915-lG), pp. 3/// Landw. Jahrb. fichweiz, 

 30 {1916), No. 1, pp. 1-2S; 31 (Will), No. 2, pp. 26S-301).— The results of seed 

 inspections for 1914-15 and 1915-16 are reported. Tlie average percentage of 

 purity, germlnability, and availability Is given for samples of seeds of clover, 

 grasses, annual and perennial fodder plants, other legumes, gi-ains, fiber plants, 

 roots, other vegetables, and trees. 



General notes are given on cultural experiments in progress at Zurich. 



Weed seeds and impurities in imported seed, E. Breakwell (Agr. Gas. N. 8. 

 Wales, 2S {1911). No. 6. pp. J,05-.iOS).—A tabulated list of the weed seeds found 

 in 1,000 official samples of agricultural and vegetable seed imported into New 

 South Wales since July 1, 1916, is presented. The percentage of weeds in the 

 samples varied from a trace to 12 per cent. 



Solanum rostratum. — A new weed plant, T. G. B. Osborn {Jour. Dept. Agr. 

 So. Aust., 20 {1911), No. 10, pp. 183, 18>t, fig. i).— The first occurrence of 8. 

 rostratum in South Australia is recorded and the plant briefly described. 



HORTICULTTJRE. 



Commercial plant propagation, A. C. Hottes {Neiv York: A. T. De La 

 Mare Co., Inc., 1918, pp. 180, figs. 106).— An exposition of the art and science 

 of increasing plants as practiced by the nurseryman, florist, and gardener. 

 The opening chapters deal with propagation by means of seeds, cuttings, bulbs, 

 layers, divisions, and gi-aftage. Directions are then given for propagating 

 stocks for various fruits, certain commercial florist's plants, herbaceous peren- 

 nials, annuals, bulbous plants, trees, and shrubs. The book concludes with a 

 reference list of books on plant propagation. 



Observations on the color of seeds originating from spontaneous crossing 

 between two forms of Phaseolus vulgaris, J. F. Lundberg and A. Akerman 

 {8veriges Vtsddesfor. Tid-skr., 21 {1911), No. 3, pp. 115-121).— A study of color 

 inheritance in the progeny of crosses between two kinds of brown beans is 

 I'eported. 



The common bean (Phaseolus vulgaris), H. Comes {Bol. Agr. ISao Paulo], 

 IS. ser., 1911, Nos. 9, pp. 112-126; 10, pp. 193-801; 11, pp. 928-941).— An ac- 

 count of the common bean {P vulgaris) with reference to its history, phylo- 

 genesis, and siipposed toxicity of certain forms. 



Observations on the eight-year experimental culture of kitchen vegetables 

 on peat soil rich in nitrogen near Torestorp, H. von Feilitzen {Svensk. Moss- 

 kulturfor. Tidskr., 31 {1911), No. 4-5, pp. 364-386, figs. Z9).— Experiments were 

 conducted with most of the common vegetables for a number of years. The 

 experiments, as a whole, indicate that good results may be obtained on peat 

 soil if it is well fertilized and properly cultivated. The soil used in the work 

 showed a low content in potash and phosphoric acid. 



The principles and practice of pruning, M. G. Kains {Neio York: Orange 

 Judd Co., 1911, pp. XXV+420. figs. 325). — A treatise on pruning embodying the 

 important results secured in investigations by experiment .station workers and 

 others in this country and abroad. The successive chapters discuss plant physi- 

 ology as related to pruning, the philosophy of pruning, buds, pruning princi- 

 ples, how wounds heal, prevention and repair of mechanical injuries, dressings 

 for wounds, pruning nursery stock, pruning young trees, pruning mature trees, 

 care of top-worked trees, bush fruit pruning, grape pruning and training, prun- 

 ing ornamental trees and shrubs, dwarf tree pruning and training, odd methods 

 of pruning and training, practical tree surgery, and rejuvenation of neglected 

 trees. 



