94 AGRONOMY [Box. Absts., Vol. IX, 



598. Brown, H. B., and C. B. Anders. Cotton experiments 1919 and 1920. Mississippi 

 Agric. Exp. Sta. Bull. 187. 32 p., 4 fig. 1920. — A review is presented of results from a study of 

 leading upland varieties of cotton during 1919 and 1920, with an outline of the environmental 

 conditions under which the tests were made; also of certain fruiting studies, boll weevil 

 control experiments, cotton culture suggestions, and of the relation of oil content of cotton 

 seed to length of lint, size of seed, lint percentage, and nitrogen content of seed. Long 

 staple varieties led in money value, with Foster-120-631 heading the list. A positive 

 correlation was found between oil content of seed and length of lint, and a negative 

 correlation between oil content and size of seed, lint percentage and nitrogen content. — H. 

 B. Brown. 



599. Brown, W. Robertson, W, H. Harrison, and P. B. Sanyal. Windrowlng sugar- 

 cane in the Northwest Frontier Province. Part I. The effect on the economical and agricul- 

 tural situation. Part II. The effect on the composition of sugarcane. Mem. Dept. Agric. 

 India Chem. Ser. 5: 237-246. 1920. — Storage of sugarcane by windrowing, a farm operation 

 practiced to prevent freezing of stalks, can be successfully carried out in the Peshawar Valley. 

 Windrowing tends to bring about a deterioration of the juice, but at the same time causes a 

 concentration of the juice so that the amount of crystallizable sugar per unit of juice remains 

 approximately constant. The weight of sucrose and crystallizable sugar in windrowed cane 

 increases rapidly at first, followed by a period when the values remain constant, after which 

 deterioration sets in. The length of the period during which cane can be stored varies with 

 the season. — /. J . Skinner. 



600. Burtt-Davt, Joseph. Utilizing prickly pear and spineless cactus. Their value as 

 fodder for live stock. South African Jour. Indust. 3 : 1000-1011. 1920. — The author discusses 

 the utilization of prickly pear and spineless cactus under South African conditions, and brings 

 out the fact that, because of its high water content, it is of especial value in time of drought. 

 As a roughage with more concentrated feed for feeding cattle and as an accessory to the dairy 

 rations when fed with more concentrated foods and some hay or pasture, prickly pear supplies 

 succulence diflScult to secure in semi-arid regions during a large period of the year. Working 

 oxen can be maintained for an indefinite period on a ration consisting very largely of prickly 

 pear. Methods of removing the spines, preparation of the cactus as a feed, and chemical 

 analyses are given. The danger of prickly pear becoming a serious pest is pointed out. — 

 Mary R. Burr. 



601. CoRREiA Afonso, Pedro. a adubafao dos arrozais em teoria napratica. [Theory 

 and practice of rice fertilization.] Bol. Agric. [Nova Goa, Portuguese East India] 1 : 229-243. 

 1919. — A very general discussion is presented of rice fertilization both with chemical fertili- 

 zers, such as phosphates, and green manure crops. Crotalaria, Dolichos, Phaseolus spp., 

 and Sesbania are mentioned in particular in the latter connection. Tables giving the chemical 

 composition of the various fertilizers discussed are given. — John A. Stevenson. 



602. Correia Mendes, F. C. Relatorio de algums servipos mais importantes a cargo 

 da direcffao dos servifos agricolas e florestais. [Report of the more important projects of the 

 agriculture and forestry service.] Bol. Agric. [Nova Goa, Portuguese East India] 1: 215-229. 

 1919. — An account is given of the introduction of seed rice of improved varieties from British 

 India for the purpose of improving rice culture in Portuguese India. — John A. Stevenson. 



603. Elorduy, Samuel T. Algunas indicaciones a los cultivadores de maiz. [Hints to 

 com cultivators.] Rev. Agric. [Mexico] 5 : 344-349. 10 fig. 1920. — A popular account is given 

 of seed selection as a means of improving the corn crop of Mexico. — John A. Stevenson. 



604. Ferris, E. B. A report of work at McNeill Branch Experiment Station from 1912 

 to 1917 inclusive. Mississippi Agric. Exp. Sta. Bull. 188. 23 p. 1920. — A brief report is 

 presented of experiments with fruits, vegetables, cotton, corn, sorghum, cowpeas, soybeans, 

 velvet beans, oats, wheat, sweet potatoes, and fertilizers at McNeill, in south Mississippi. — 

 H. B. Brown. 



