April, 1920] SOIL SCIENCE 181 



1256. Henderson, L. J., W. O. Fenn, and Edwin J. Coh.v. Influence of electrolytes 

 upon the viscosity of dough. Jour. Gen. Physiol. 1:387- .'507. 1919. 



1257. Larson, W. P., W. F. Cantwell, and T. B. Hartzell. The influence of the sur- 

 face tension of the culture medium on the growth of bacteria. Jour. Infect. Diseases 25: 41-^16. 

 1919. — A sodium salt of castor oil was used for depressing the surface tension of ordinary 

 bacteriological broth. All pellicle forming bacteria ceases to grow at the surface where the 

 tension is below 45 dynes, the surface tension of the broth itself being 59 dynes. When 

 B. subtilis is grown on broth of low surface tension, the tendency to form spores is consider- 

 ably reduced. Some anaerobes, notably B. letani, grow well aerobically on a medium of re- 

 duced surface tension. It is suggested that the layer of oil used to cover media for the pur- 

 pose of producing an aerobiosis probably acts by reducing the surface tension rather than 

 by excluding oxygen. — Seltnan A. Waksman. 



1258. Lecomte du Nottt, P. A new apparatus for measuring surface tension. Jour. 

 Gen. Physiol. 1 : 521-524. 1919. 



1259. Lindet. Sur l'utilisation des sarments de vigne, des pepins et des marcs de raisins. 

 [The utilization of grape shoots, seeds, etc.] Compt. Rend. Acad. Agric. France 1919: 156- 

 157. 1919— See Bot. Absts. 3, Entry 1072. 



1260. Moreno, Edtjardo. La combustibilidad del tabaco. Contribucion al estudio agro- 

 quimico de la plants. [Relation of fertilizers to combustibility of tobacco.] Revist. Agric. 

 Com. y Trab. 2: 169-170. 1919— See Bot. Absts. 3, Entry 1265. 



SOIL SCIENCE 



J. J. Skinner, Editor 

 FERTILIZATION 



1261. Aston, B. C. Improvement of poor pasture. New Zealand Jour. Agric. 18: 15-27 

 1919.— See Bot. Absts. 3, Entry 900. 



1262. Clark, C. F. The potato industry in Colorado. Potato Mag. l u : 8-9, 22; 1": 

 14-15, 29. 8 fig. 1919— See Bot. Absts. 3, Entry 920. 



1263. Clinton, G. P. Prematuring and wilting of potatoes. Potato Mag. l u : 12-13, 24. 

 1919.— See Bot. Absts. 3, Entry 1162. 



1264. McHatton, T. H., J. W. Firor, and R. E. Blackburn. Growing tomatoes in 

 Georgia. Georgia State Coll. Agric. Bull. (Reprint) 145: 1-12. Fig. 1. 1919.— See Bot. 

 Absts. 3, Entry 1075. 



1265. Moreno, Eduardo. La combustibilidad del tabaco. Contribution al estudio 

 agro-quimico de la planta. [Relation of fertilizers to combustibility of tobacco.] Revist. 

 Agric. Com. y Trab. 2: 169-170. 1919. — General discussion with results to follow in other 

 articles. — F. M. Blodgett. 



1266. Wheeler, H. J. Fertilizers stimulate production in Maine. Potato Mag. I 12 : 30 • 

 1 fig. 1919. 



1267. Wheeler, H. J. What potatoes need in Wisconsin. Potato Mag. 1": 14, 31. 1 fig. 

 1919. — Advocates use of complete commercial fertilizer. — Donald Folsom. 



1268. White, J. W. Fertilizer experiments on DeKalb soil. Yields of clover, corn and 

 Kentucky blue grass. Pennsylvania Agric. Exp. Sta. Bull. 155:3-20. 4 pi-, 17 fig. 1919. — 

 The experiments were conducted upon 33 plots of one-tenth acre each. They are intended to 



