No. 3, October, 1921] HORTICULTURE 223 



born deaf. It is important to note that the deafness was probably otosclerosis and, there- 

 fore, of hereditary character." — Howard J . Banker. 



1388. ZiMMERMANN, Walter. [German rev. of: Goldschmidt, Richard. Mechanis- 

 mus und Physiologic der Geschlechtsbestimmung. [The mechanism and physiology of sex 

 determination.] 251 p., 113 fig. Gebriider Borntracger: Berlin, 1920.1 Zeitschr. Bot. 13: 

 407-410. 1921. 



HORTICULTURE 



J. H. Goitrlet, Editor 

 H. E. KxowLTON, Assistant Editor 



(See also in this issue Entries 1147, 1198, 1209, 1291, 1293, 1294, 1314, 1315, 1316, 1322, 

 1332, 1338, 1361, 1364, 1379, 1543, 1546, 1550, 1585, 1595, 1677, 1682) 



FRUITS AND GENERAL HORTICULTURE 



1389. AxoNTMOTJS. A successful (cacao and coconut) plantation in Trinidad. Agric. 

 News [Barbados] 19: 249. 1920.— An article in the Port-of-Spain Gazette, July 29, 1920, 

 giving an account of a visit to cacao and coconut estates belonging to Mr. G. G. Brown is 

 abstracted. Of interest is the fact that a system of drastic root pruning, carried out during 

 forking operations, was of great benefit to the cacao fields. — /. S. Dash. 



1390. AxoxTMOus. The green lime trade of Dominica. Agric. News [Barbados] 19: 

 265. 1920. — A new line of trade is being opened up with Mobile, Alabama, 3576 barrels and 

 747 boxes of fresh limes having been already shipped. It appears this market favors boxes 

 to barrels, which are in vogue for the New York market, and material has been received for 

 making 20,000 standard boxes of 2 cubic feet each. — /. *S. Dash. 



1391. Alderman, W. H. The horticultural importance of plant associations. Proc. 

 Amer. Soc. Hort. Sci. 17: 261-2G6. 1920 [1921]. — A review is presented of the recent work on 

 the influence of one crop on another. The saggestion is made that further work should be 

 conducted with orchard plants to determine the relations of toxicity and plant food require- 

 ments. — E. C. Auchter. 



1392. Babcock, E. B. Bud selection and the frequency of mutations. Proc. Amer. Soc. 

 Hort. Sci. 17: 40-44. 1920 [1921]. — The problem of bud selection as a means of increasing 

 yields in deciduous fruits is discussed. Although some nurserj'men are attempting to select 

 their propagating buds from high-yielding parent trees, it is pointed out that the resulting 

 trees can then be offered only as first-class stock of the variety, but nothing more until it 

 has been proved b\' performance tests of the budded progeny that the character of high yield 

 is actually transmitted. [See also Bot. Absts. 9, Entry 1294.] — E. C. Auchter. 



1393. Beach, F. H. Pruning schools in Ohio. Proc. Amer. Soc. Hort. Sci. 17: 70-73. 

 1920 [1921]. — Pruning schools are rapidly taking the place of pruning demonstrations in Ohio. 

 In 1919, 2 schools, with an attendance of 35, were held in Lawrence County. In 1920, 28 schools, 

 with an attendance of 532, were held in 8 counties. Marked results have been secured. — 

 E. C. Auchter. 



1394. Belleford, M. V. Note sur la culture du cacao a I'lle de San Thome. [Notes on 

 cacao culture in the Island of San Thome.] Bull. Agric. Congo Beige 11 : 67-73. 1920. — Notes 

 on the geography, soil and climatic conditions of the island of San Thome are followed by a 

 brief discussion of cacao culture. Three parasites of the cacao tree are mentioned, Phijtoph- 

 ihorafaberi, Heliothrips rubrocincta, and Lasiodiplodiacacaoicola, and methods of control sug- 

 gested. Statistics are given regarding exportation from the island for the years 1902-1916. 

 Two of the chief plantations, "Porto Allegre" in southern San Thom^ and "Rio do Ouro" 

 in the north, are described in some detail. — Henri Micheels. 



