1920] HORTICULTURE. 837 



market, the Ipadln^ prodnrinK sections, market preference, and distribution. 

 Appended dalii show the destinations of carlot shipments from each important 

 producing section. 



The California grape industry in 1919, R. L. Nougaret {Calif. Dept. Affv., 

 Vitie. Serv. Rpt. 1 (1920), pp. 20). — A statistical report on grapes and grape 

 products in 1919, with a discussion of prospects for the grape industry in 1920. 



Currant-grape growing: A promising new industry, G. C. Husmann (U. S. 

 Dept. Ayr. Bui. S5G (1920), pp. 16, pis. 7, figs. S).— A contribution from the 

 Bureau of Plant Industry presenting the results to date of the successful 

 work of this Department in introducing the Panariti currant grape (the black 

 commercial currant) into- California, determination of congenial phylloxera- 

 resistant stocks for the variety, and the development of profitable yields of 

 currants by the practice of ringing the vines (E. S. R., 38. p. 346). 



The bulletin discusses the history of the currant industry, Its importance 

 in Greece, imports of currants into the United States, currant-grape varieties, 

 the introduction of Panariti grapes, conditions suited to currant-grape cul- 

 ture, experimental work and composition of soil at the Fresno experimental 

 vineyard, cultural practices, Including details of ringing the vines to increase 

 the yield, congeniality of the Panariti variety to different stocks, and harvest- 

 ing and curing currants. 



Contributions to the botanical study of cultivated plants. — I, A mono- 

 graph on the genus Ananas, M. S. Bkrtoni (An. Cient. Paraguay., Ser. II, 

 1919, No. 4, PP- 2Jf 8-322). — A descriptive account of the species and varieties of 

 Ananas with reference to their botanical characters, habitat, peculiar qualities, 

 and uses, including also a discussion of evolutive changes within the genus, 

 the origin of cultivated varieties, and climatology of the genus. 



Method of grafting and top-working the avocado, S. W. Funk iAn7i. Rpt. 

 Calif. Avocado Assoc, 1919-20, pp. 78-SO, ftps. 3). — A diagram is here presented 

 and discussed showing different methods of making cambium connections with- 

 out splitting and injuring the wood. 



Top-working old avocado trees, W. R. Manning {Ann. Rpt. Calif. Avocado 

 Assoc, 1919-20, pp. Uf-ie, pi. 1). — In top- working old avocado trees, cleft-graft- 

 ing gave much better results than budding either on old wood or on new after 

 the tree was cut back. 



Maturity work on avocados, E. M. Chace {Ann. Rpt. Calif. Avocado Assoc, 

 1919-20, pp. 59-63). — A contribution from the Citrus By-Products Laboratory 

 of the U. S. Department of Agriculture outlining work being conducted with 

 eight varieties of avocados to determine the best period for harvesting, with 

 reference both to storage and quality. Analyses are given of several miscel- 

 laneous avocado samples. 



Avocado performance records, A. D. Shamel {An7i. Rpt. Calif. Avocado 

 Assoc, 1919-20, pp. .'tJf-50). — The method of keeping individual tree records here 

 described is similar to that used in keeping tree records of citrus trees (E. S. R., 

 37, p, 144). 



Guatemalan and Mexican avocados fruiting in Florida, J. B. Bkach {Ann. 

 Rpt. Calif. Avocado A.'isoc, 1919-20, pp. 73-76). — Notes are given on the charac- 

 ter of the fruits of several varieties of Guatemalan and Mexican avocados 

 that have been grown for a greater or less period in different parts of southern 

 riorida. 



Some facts and figures regarding banana cultivation, W. Bt:trns and P. G. 

 Dani {Agr. Jour. India, 1.5 {1920), No. 4, pp. 386-392, fig. i).— Based on the 

 records of two plantations in the Ganeshkhind Botanical Garden, observations 



t 19973°— 20 4 



