138 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY, 



Stock on Graft, Influence of (Eev. Hort. March 16, p. 123).— 



Piuus excelsa grafted on P. Cembra and also on P. Strobus in both cases 

 assumed the exact habit of growth of the stocks used.— C. T. D. 



Stocks. By M. Alin (Lc Jard. No. 507, p. 104 ; April 5, 1908 ; 



1 plate). — The different varieties of stock in cultivation are enumerated, 

 with practical directions for their treatment. — F. A. W. 



Sugar Beet, Curly Top, a Disease of. By C. 0. Townsend 

 (U.S.A. Dep. Agr., Bull. 122 ; April 1908 ; 11 plates).— Curly top is not 

 identical with any disease of the beet previously known, and has not been 

 reported from any country other than the United States. It does not 

 appear to be produced by any one abnormal condition of soil or climate. 

 It does not seem to be due to any parasite or any condition of the seed ; 

 it also attacks stock and garden beets, but does not seem to be com- 

 municated directly from beet to beet. It has not appeared to any serious 

 extent two years in succession in the same locality. Growers need not 

 hesitate to plant beets in a field, although the entire crop was destroyed 

 in that field in the previous year. — M. C. C. 



Tacsonia. By J. Britten {Jour. Bot. 537, p. 31G ; 9/1907).— 



T. micradena and T. Purupuru of Candolle are both identical with 

 T. pinnatistipula of Jussieu. T. pennipcs of M. J. Roemer is a variety 

 of this species. — G. S. B. 



Tea in Jamaica. By the Hon. H. E. Cox (Journ. Imp. Dep. Agri. 

 11'./. No. 3, 1907). — A history of tea culture in Jamaica; conditions 

 under which culture has taken place; summary of rainfall and average 

 temperature, the mode of culture, and the preparation of the leaf. 



M. C. C. 



Telephium. By F. N. Williams (Jour. Bot. 525, pp. 289-304 ; 

 9 1906). — A learned discussion of the history of this genus, of which 

 six species are recognised, from Dioscorides and Pliny downwards. The 

 Ti Irpliium of Dioscorides, however, is Ccrinthc major. — G. S. B. 



Timbers Of Jamaica (Journ. Imp. Dep. Agri. W.I. No. 3, 1907).— 

 This is a list of the timbers of Jamaica, with their local and botanical 

 names, about 250 species, arranged under the following groups. 



Timbers suitable for (1) cabinet work ; (2) carriage and cart work ; 

 (8) coopering work ; (4) fuel ; (5) general inside work ; (6) outside work ; 

 (7) house work and furniture; (8) mill work; (9) piles; (10) posts; 

 (11) railway sleepers; (12) shingles; (18) turnery. — M. C. C. 



Tobacco Root Rot, Field Treatment of. By Lyman T. Brigga 

 (I'.S.A. Dep. 4gr H CtfC, 7; May 1908).— The tobacco root rot is re- 

 cognised as due to the action of a soil fungus (Thielavia basicola). It 

 attacks the tobacco r ><>ts most severely when the soil has become alkaline. 

 It is recommended that no lime be used on diseased fields, but that 

 sulphate of potash or double manure salts be applied, and phosphoric 

 acid in the form of acid phosphate, or dissolved bone, to correct the 

 alkalinity of the soil. Disused fields should be used for some other 



