June, 1920] HORTICULTURE 353 



of fruits, earliness of fruiting, and the net profits from the cmp. The emasculation method of 

 pollinating the blossoms is especially recommended because of the ease of applying pollen, 

 the prevention of the duplication of work and the thoroughness of pollen application at a 

 time when the [lower is most receptive. The work should be done carefully and regularly. 

 Fruits from hand pollinated plants were harvested '21 days in advance of those not so treated. 

 The number of unfruitful blossoms was reduced from GO per cent to 20 per cent through efficient 

 pollination. The net financial returns are decidedly in favor of hand pollination, since the 

 cost of pollination for the entire season may be covered by increased yields during the first 

 two weeks of harvesting, when higher prices for fruit prevail. [See Bot. Absts. 3, Entry 

 2091.]— E. J. Kraus. 



2386. Calvino, Mario. La mejor verdura del tropico, la chaya (Jatropha urens, var. 

 inermis). [The best greens of the tropics.] Revist. Agric. Com. y Trab. 2: 364-365. / fig. 

 1919, — The leaves of the "chaya" are said to be an excellent food cooked as greens or in various 

 mixtures. The fresh leaves contain about 1 per cent of protein, 0.25 per cent of fat and 20 

 per cent of carbohydrates. The plant is grown from cuttings. — F. M. Blodgett. 



2387. Guzmanes, Antonio. El abono del pimiento. [Fertilization of the pepper.] Infor- 

 macion Agric. [Madrid] 9: 191-192. 1919— See Bot. Absts. 3, Entry 1786. 



2388. Hodsoll, H. E. P Some hints on the manuring of garden crops. Jour. Roy. Hortic. 

 Soc. 43: 346-358. 1919. 



2389. Olney, A. J. Some experiments with tomatoes. Kentucky Agric. Exp. Sta. Bull. 

 218: 149-159. 5 pi., 1 fig. Dec, 1918. — Three-year test with tomatoes gives conclusive evi- 

 dence that staking and pruning reduces the yield of marketable fruit per plant but increases 

 the yield per acre because of the greater number of plants. Tomatoes staked and pruned 

 ripen about one week earlier than those untrained. Plants pot-grown give higher yields 

 than those grown in flats. — Frank T. McFarland. 



2390. Polak's Frutal Works. Pepermunt cultuur in Nederland. [Cultivation of 

 peppermint in Holland.] Pharm. Weekblad. 56: 41. 1919.— See Bot. Absts. 3, Entry 1688. 



2391. Waid, C. W. Muskmelon culture in Michigan. Michigan Agric. Exp. Sta. Special 

 Bull. 95. 18 p., 10 fig. 1919. 



HORTICULTURE-PRODUCTS 



2392. Addis, Jose M. Importancia industrial de la Carica papaya (Chemburu de los 

 brasileflos; Fruta bomba en Cuba). [Industrial importance of Carica papaya.] Revist. Agric. 

 Com. y Trab. 2: 366-369. 7 fig. 1919.— This is a general article on the Carica papaya dealing 

 with the uses of the digestant papain which is prepared from the juice, the propagation, 

 planting, collecting juice, and drying of juice and preparing the product for export. — F. M. 

 Blodgett. 



2393. Anonymous. Castor oil production. No. 1. Tropical Life 15:6-7. 1919. — A 

 compilation setting forth the statement from an American consular report that castor beans 

 (Ricinus communis) grown in the Philippine Islands from seed imported from India have a 

 higher oil content than seed of the local variety. Analysis of seed of the Indian variety showed 

 50 per cent of oil whereas seed of the native variety contained only 40 per cent. [See next 

 following Entries, 2394, 2395.]—//. A T . Vinall. 



2394. Anonymous. Castor oil production. No. 2. Tropical Life 15: 21. 1919.— A com- 

 pilation of information on yields and the oil content of castor beans. In Madras where 

 500,000 acres are planted to castor beans (Ricinus communis) the normal yield is 200 to 300 

 pounds per acre on dry land and 700 pounds in the more favored localities. The average 

 yield in the United States varies from 700 to 1600 pounds per acre. A higher percentage of 



