No. 1, July, 1920] AGRONOMY 1 .", 



120. Rolet, AntontN. Botanicals in central Europe. Pharm. Era 52:283. 1919. 

 (Translated from Farmacia). — The author discusses the cultivation of medicinal plants in 

 Central Europe and their exportation to France and other countries before the \v;tr; he gives 

 credit to CHABLBB Ihk, of the Bureau of Medicinal Plants of Kolozsyar Tschiret, as the 

 initiator of the rational, systematic, cultivation of medicinal plants in central Europe. — 

 Oliver Atkins Farwell. 



121. Rupp, G. Tabak-Ersatzmittel. [Tobacco substitutes.] Zeitschr. Untersuch. Nah- 

 rungs-u. Genussmittel 37:370-377. 1919. — German tobacco substitutes include hops and 

 beech, chickory, linden, maple, plane, and chestnut leaves; also clover and rose leaves, violet 

 root powder, woodruff, plantain leaves, althaea, coltsfoot, baldrian root, nettle, curled mint, 

 lemon rind, lavender and thyme; also pear, apple, walnut, hazelnut and artichoke leaves. — 

 Preparations containing 20 per cent hops are said to produce headache and dizziness. Ethe- 

 real oils in tobacco substitutes considered harmless because burned. Content of pyridine, 

 ammonia, CO, etc., in smoke of these products still undetermined. — Sample product: 30 per 

 cent tobacco, 30 per cent cherry leaves, 30 per cent beech leaves, and 10 per cent woodruff, 

 or 30 per cent tobacco ribs, 10 per cent cherry leaves, 30 per cent chestnut leaves, and 20 

 per cent beech leaves. — H. G. Barbour. 



122. Russell, G. A. The effect of fertilizers on the composition of hops. Jour. Indust. 

 Eng. Chem. 11:218-224. 1919. — No constant definite effect of fertilizers on the amount of 

 soft resins, ha^rd resins, total resins, soluble ash, insoluble ash, and total ash present in the 

 hops is found. — H. Schmitz. 



123. Scarlett, W. G. Seed laws and seed testing from the viewpoint of the seedsmen. 

 Seed World 5 3 : 242-243. 1919. 



124. Schribeaux. Sur l'herbe du Soudan. [Sudan grass.] Compt. Rend. Acad. Agric. 

 France 5:460-464. 1919. — Discussion of the culture of this grass (Sorghum exiguum) in 

 southern France, with report of experiments made by M. Libes as to the yield, etc. It is 

 considered a very promising new forage crop for southern France. — E. A. Bessey. 



125. Scofield, C. S. Cotton rootrot spots. Jour. Agric. Res. 18:305-310. 7 fig. 1919. 

 —See Bot. Absts. 4, Entry 1350. 



126. Skerrett, R. S. For seed or for fiber? How a faulty system has led the American 

 flax-grower to waste millions of dollars. Sci. Amer. 121: 30-31. 5 fig. 1919. — Discusses the 

 need of conservation in our present flaxseed cultivation so that flax will be raised not only 

 to supply seed for the manufacture of linseed oil and linseed cake, but also for the straw, 

 linen yarns, short length fibers and cortex which can be woven into textiles and manufactured 

 into numerous other products. — Chas. H. Otis. 



127. Snell, John. Potatoes: local immune variety trials. Jour. Bd. Agric. [London] 

 Supplem. 18: 103-114. 1919.— See Bot. Absts. 4, Entry 1358. 



128. Stevens, O. A. Weed seeds in analyses. Seed World 5 3 : 243. 1919. — A discussion 

 is given of the variations which occur in the number of foreign seeds reported per unit weight 

 of sample analyzed. Data are presented to show the range of variation which may be ex- 

 pected. — M. T. Munn. 



129. Stone, A. L. Testing of newly harvested field seed is difficult problem. Seed 

 World 5 10 :37. 1919. — Author considers the problem of the seed analyst to shorten the 

 period required to obtain satisfactory germination tests of newly harvested seeds of grains 

 and grasses. While a prolongation of the duration of the germination test gave a satisfactory 

 test, the period between the time of thrashing and the time the grain is to be used for seeding 

 or placed upon the market with germination data is so short as to make such a procedure a 

 practical impossibility. From investigational work with wheat it appears that the matura- 



