582 JOUEXAL OF THE ROYAL HORTICULTURAL SOCIETY. 



treatment, and the author concludes by saying that formalin is a 

 convenient, efficient, and fairly inexpensive method of treating Oats for 

 the prevention of smut." — D. H. 



Soil Analysis, On Uniformity in (U.S.A. Exp. Stn. Becord, vol. 

 xii. No. 10, 1901, p. 905). — Proposed methods of taking sample, drying, 

 sifting, determination of moisture, loss on ignition, nitrogen, carbonate 

 of lime, " total " mineral constituents, available phosphoric acid and potash, 

 and expression of results. — E. F. H. 



Soil, Retention of Moisture in. ''Sugar" (Agr. Jour. Cape G.H. 

 vol. xviii. No. 11, pp. 756-759, May 1901). — Tile drainage, deep culture, 

 and manuring are taken into consideration. — B. X. 



Soils, Investigation of their Physical Properties. By Lyman 

 J. Briggs {U.S.A. Dep. Agr. 1900, p. 397).— The object and methods of 

 the investigation are fully explained. — C. W. D. 



Soils, Lands, and Soil Moisture {U.S.A. Exp. Stn. Beconl, vol. 

 xii. No. 10, 1901, p. 921 ; tab. 3). — The determined average percentage 

 of free, hygroscopic, and total moisture present to a depth of four feet 

 in the various soils of several localities in California during 1898. The 

 necessity of the presence of " free water " to a sufficient depth to be 

 readily a^'ailable for the roots to take up is indicated. It is demonstrated 

 that the "evil effects" following a period of drought are noticed for 

 some considerable time after rain has fallen, owing to the fact that 

 although the surface of soil is moistened, the under-soil around rootlets 

 may still be too dry to provide a sufficient quantity of water for the plant 

 to thrive : This fact should always be borne in mind by the cultivator 

 when watering plants growing in either pots, beds, or borders. — E. F. H. 



Soils, Physical Properties of. Anon. (.1^7?-. Jour. Cape G.H. 

 vol. xix. No. 3, pp. 141-144, August 1901). — A continuation of former 

 articles. It deals with the relation of the soil to the atmosphere, kc. 



B. N. 



Solanum Wendlandi. By Louis Vinvincq {Be v. Hart. p. 259 ; 

 June 1901). — Propagation by cuttings. — C. T. D. 



Sorbus Species, Contributions to a Knowledg-e of. By E. 



Koehne (Gartenflora, p. 406 ; 1/8/1901). — Descriptions of Sorbus 

 pekinensis, S. discolor, S. matsumuraiia, S. japonica, S. sambucifolia, 

 S. occidentalis, S. Aucuparia \av. integerrima, S. AncujJai'ia \a,r. diilcis, 

 S. Aucuparia var. rossica, and aS'. prcemorsa. — J. P. 



Soy Beans, a drought-resisting crop {U.S.A. Exp. Stn. Kansas 

 BuU.Q2, 1900). — The Soy Bean is recommended to the Kansas farmer because 

 it stands the drought as well as Sorghum. The grain is a richer feed than 

 Linseed meal, and the plant enriches the soil. The bulletin is occupied 

 with hints oft culture, harvesting, and statistics. — M. C. C. 



Sphagnum, Use of, for Seed Sowing. By Jules Rudolph 



{Bev. Hort. p. 263 ; June 1901). — With special reference to Nepenthes, 

 Orchids, Droseras, &c. — C. T. D, 



