HORTICULTURE. 841 



penetrated the sparse sickly foliage rather thau to the influence of potash or 

 any other fertilizer. 



Nitrogen and potash in combination produced slightly larger fruit. The 

 average gross income per acre from all nitrogen plats was $468.85 and from 

 the nonnitrogen plats $275.43. The influence of lime appears to have been 

 largely negative, although the production was somewhat increased. 



In the experiment on young trees at Cherry Run, there was no appreciable 

 influence of any fertilizer the first year. After the first year nitrogen produced 

 a strong growth of wood and foliage while potash apparently weakened the 

 vigor of the tree. Practically all of the small crop of fruit produced the fourth 

 year was from nitrogen-fed trees. 



The author concludes that the theory that heavy fertilizing with nitrogen 

 is injurious to tlie peach is shattered by these experiments, as is also the former 

 conception of the value of potash. Recommendations for shale and other soils 

 low in fertility are 200 to 250 lbs. of nitrate of soda per acre for bearing trees 

 and 0.5 lb. per tree for young trees after the first year. It is suggested that the 

 necessary nitrogen may be advantageously supplied by means of leguminous 

 cover crops, but this point has not been clearly demonstrated. 



Experiments in fertilizing with catalytic substances of vine ash, S. Cetto- 

 LiNi {Bol. Quind. Soc. Agr. Ital, 20 {1915), No. 13, pp. J,31-/{S8) .—Data, are 

 given and discussed showing the effect on the quantity and composition of the 

 must and wine of grapes fertilized with the following substances : Calcium sul- 

 phate, aluminum sulphate, magnesium sulphate, potassium permanganate, iron 

 sulphate, sodium chlorid, and sulphur. 



Citrus culture, W. J. Allen (Dept. Agr. N. S. Wales Farmers' Bui. 90 (1914), 

 pp. 96, pis. 5, figs. 108). — A treatise on the culture, harvesting, marketing, and 

 diseases of citrus fruits, with special reference to conditions in New South 

 Wales. 



The mangosteen, D. Fatrchild (Jour. Heredity, 6 {1915), No. 8, pp. 339- 

 S4T, figs. Ii). — A discussion of the mangosteen with reference to its distinguish- 

 ing characteristics, edible qualities, and the possibility of its successful culture 

 in tropical North America, together with notes on attempts to cultivate the 

 mangosteen in other tropical countries and its adaptability for grafting on 

 related species. 



The palms of British India and Ceylon, indigenous and introduced, E. 

 Blattek {Jour. Bombay Nat. Hist. Soc, 22 {1913), No. S, pp. U4-463, pis. 8, 

 fig. 1; 22 {1914), No. 4, PP- 665-681, pis. 7, fig. 1; 23 {1914), No. 2, pp. 269-281, 

 pis. 5). — In continuation of previous articles (E. S. R., 30, p. 444) a descriptive 

 account is given of a number of additional native and introduced palms of 

 British India and Ceylon. 



Experiments in the germination of coffee carried out in Brazil, E. Navaeeo 

 DE Andrade {Fazendeiro, Sao Paulo, 8 {1915), No. 1, pp. 3-8; ahs. in Internat. 

 Inst. Agr. [Rome], Mo. Bui. Agr. Intel, and Plant Diseases, 6 {1915), No. 5, 

 pp. 110, 711). — The results are given of a comparative germination test of whole 

 fruit, of seed without pulp, and of decorticated seed freed also from the parch- 

 ment-like membrane. Generally speaking, the best germination was secured 

 by planting whole fi-uits. 



Tea culture in the Caspian Provinces of Persia and in Trans-Caucasian 

 Russia, G. D. Hope, trans, by C. Bernard (Dept. Landb., Nijv. en Handel 

 [Dutch East Indies], Meded. Proefstat. Thee, No. 36 {1915), pp. 27, pis. 2).— 

 This comprises Dutch translations of descriptive accounts dealing with the cul- 

 ture and preparation of tea in the Caspian Provinces of Persia and Trans- 

 Caucasian Russia. 



