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JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



the benefit likely to be derived from the use of formalin. The 

 European practice of sanding the seed-bed was followed with fair 

 results, and experiments are in progress with sprays applied just after 

 germination. — F. J. C. 



" Corky Scab" of Potatos (Journ. Bd. Agr. xv. p. 593; 

 November 1908; 1 plate). — "Corky scab" is the, name applied to that 

 form of scab characterized at first by small dark- coloured slightly 

 raised patches on localized areas of the surface of the tuber. The 

 blister is afterwards ruptured, and the brown or snuff-coloured spore- 

 balls are exposed. If the tubers are in a wet situation the parasite, 

 now called Spongospora scabies Mass. (= Tuburcinia scabies Berk, and 

 Sorosporium scabies Fisch. and Waldh.), develops further and causes the 

 formation of large cavities up to half an inch in depth ; but if in a dry 

 situation the affected area is cut off from the sound by a large develop- 

 ment of cork, whence the name. The planting of diseased tubers should 

 be avoided. Several other forms of scab are known. — F. J. C. 



Corytholoma macropodum. By T. A. Sprague (Bot. Mag. 

 tab. 8228). — Nat. ord. Gesneriaceae ; tribe Sinningicae. South Brazil. 

 Herb 6-9 inches high; leaves suborbicular, 3-5 inches in diameter; 

 llowers subumbellate, pendulous ; corolla cinnabar-red ; tube 1 inch long. 



G. H. 



Cotton Industry. West Indian Agricultural Conference, 1908, 

 Report of Papers {Jour. Imp. Dep. Agr. W.I. 1908, vol. ix. No. 3). 



" Recent Results in the Cultivation of Cotton in Barbados," by 

 J. H. Bovell, F.L.S. 



" Recent Results of Cultivation of Sea Island Cotton in St. Vincent," by 

 W. N. Sands. 



"Cotton Cultivation in British Guiana," by Professor J. B. Harrison, 

 C.M.G. 



" Progress of Sea Island Cotton Industry in the West Indies," by 

 Thomas Thornton, A.R.C.S. 



" Experiments on the Improvement of Cotton by Seed Selection in the 

 Leeward Islands," by Dr. Francis Watts, C.M.G. 



"Treatment of Cotton Pests in West Indies," by H. A. Ballow, with 

 figures.— M. C. C. 



Cotton-root Rot of Texas. By C. L. Shear and George F. Miles 

 (U.S.A. Dep. Agr. Bur., PL Ind,, Circ. 9 ; May 1908).— This root rot is 

 caused by Ozonium omnivorum, which infests the soil. A combination 

 of rotation of crops, and deep fall ploughing will probably be found the 

 most satisfactory, efficient, and practicable means of controlling the root 

 rot of cotton. — M. C. C. 



Cover Crops in Orchards. By E. J. Delwiche and J. G. Moore 

 (U.S.A. Exp, Stn. Wisconsin, 24th Ann. llep., 1907, p. 379).— Cover 

 oropfi are used: " (a) To prevent deep freezing of the ground and thus 

 avoid root-killing of the trees ; (b) to hasten the ripening of late wood 

 growth, and in a measure prevent top-killing ; (c) to prevent the soil from 



