16 AGRONOMY [Bot. Absts., Vol. IV, 



tion process proceeds as rapidly in dry storage as in the presence of external or supplied 

 moisture or vice versa. The problem becomes one of hastening the process of maturation, 

 or determining from a large number of tests a satisfactory rate of increase, which may be 

 used as a basis for computing germination tests of certain newly harvested seeds when 

 time will not permit the securing of tests, in the usual way, upon fully matured seeds. — 

 M. T. Munn. 



130. Stuart, William. Production of late or main-crop potatoes. U. S. Dept. Agric. 

 Farmers Bull. 1064. 39 p., 21 fig. 1919. 



131. Stuart, William. Good seed potatoes and how to produce them. Potato Mag. 2 3 : 

 12-13; 2 J : 14-15. 1 fig. 1919. 



132. Swanson, C. O., L. E. Call, and S. C. Salmon. Losses of organic matter in mak- 

 ing brown and black alfalfa. Jour. Agric. Res. 18: 299-304. 1919. — The authors' summary is 

 as follows: "Partially wilted alfalfa (Medicago sativa) stacked without curing undergoes fer- 

 mentative changes which result in the loss of about two-fifths of the organic matter. This 

 loss apparently increases with the length of time in the stack and with the degree of fer- 

 mentative changes that occur. Alfalfa which has become black as a result of fermentation is 

 very inferior as a feed for steers in comparison with both brown alfalfa hay and hay of good 

 color and quality." — D. Reddick. 



133. T[archetti], A. Puliamo i risoni e selezioniamo quelli da seme. [The cleaning of 

 the rice-crop and the selection of seed-rice.] Gior. Risicoltura 9:2-7. 1919. — This popular 

 description of the methods recommended is made especially necessary because of the exces- 

 sive amount of yellow rice, immature rice, and dead grains in the 191S crop of rice (Oryza 

 sativa) in Italy. — R. Kent Beattie and Francesco Vcntresca. 



134. Taylor, H. W. Tobacco culture. Field operations. Rhodesia Agric. Jour. 16: 

 401^408. PI. 1-3. 1919. 



135. Tuero, Fernando Lopez. Anil. [Indigo.] Informacion Agric. [Madrid] 9:169- 

 170, 195-197, 224-228. 1919. — An account of indigo culture including botanical description 

 of the species involved {Indigojera spp.), history of the culture, soils, seeding, cultivation, 

 harvesting, and preparation of the final product. — John A. Stevenson. 



136. Turnbull, Gervaise. Increased production of grass. Jour. Bd. Agric. Great Bri- 

 tain 26:607-621. 1919. 



137. Ulibarri, Ricardo B. La papa. [The potato.] Bol. Camara Agric. Nacion. Leon 

 Mexico] 6:262-288. 1919. — A compiled account of the history, structure, varieties, cultiva- 

 tion, insect pests, and fungus diseases of the potato (Solanum tuberosum) . — John A. Stevenson. 



138. Varela, E. El frijol dolico. [The Dolichos beans.] Revista Agric. [Mexico] 4: 

 18-20. 2 fig. 1919. — Dolichos ungniculata, D. sesquipedalis, and D. lablab described briefly. 

 — John A. Stevenson. 



139. Waldron, Ralph Augustus. The peanut (Arachis hypogaea) its history, histology, 

 physiology and utility. Contrib. Univ. Pennsylvania Bot, Lab. 4: 301-33S. PI. 79-80. 1919. 

 — The author found root hairs on the plant, although reported absent by two previous 

 workers. Their growth is stimulated by a high temperature and humidity, the tip hairs 

 appearing in very young plants when growing rapidly and exposed to moist air. The hypo- 

 cotyl, through the tendency to store sugar, enlarges and becomes tuberous unless growth 

 conditions are ideal. The results of a study of stem structure and leaf structure follow in 

 sequence. The author shows that the fruit stalks, or gynophores, are geotropic. The epi- 

 dermal cells of the carpellary tips arc remarkably granular thus suggesting a possible per- 

 ceptive relation of the granules. The epidermis of the hypogeal parts becomes elongated to 



