1 68 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Sulphur Content ol some typical Kentucky Soils, The. By O. M. Shedd 

 (U.S.A. Exp. Stn., Kentucky, Bull. 174). — A comparison of soils, to show the 

 depletion of and the necessity of adding sulphur to many soils, is given. 



A table is given comparing the depletion of sulphur by various crops, and 

 also the total amount of sulphur present in certain plants, as shown by the new 

 method of determination as compared with the older ash percentages. Some 

 of these are as follows : — 



Total Sulphur as Ash Percentage of 



Name. estimated by new method. Sulphur, old method. 



White Corn . . . . -170 -004 



Onions ..... -568 -120 



Wheat Gluten . . . . -86o -004 



Turnips -740 -359 



The addition of flowers of sulphur to the soil has given very decided increases 

 in the yields of various crops, such as beans, peas, onions, beets, celery &c. 



C. P. C. 



Sweet Peas. ByA.C. Beal (U.S.A. Exp. Stn., Cornell, Bull. 342, pp. 215- 

 360 ; 25 plates). — In addition to the classification and description of a 

 large number of varieties of Sweet Peas, the following points of interest are 

 noticed. In autumn planting, delay the operation as late as possible, but avoid 

 sowing the seed in cold, wet, heavy soil. In spring, white-seeded varieties must 

 not be planted before the ground has thoroughly thawed. Black-seeded varieties 

 retain their vitality better than white-seeded sorts. 



The best market varieties are 'Dorothy Eckford,' 'King Edward VII.,' 

 'Brilliant Blue,' 'Lady Grizel Hamilton,' 'Prima Donna,' 'Blanche Ferry,' 

 'Countess Spencer,' ' Nora Un win,' ' Asta Ohn,' and 'King Edward Spencer.' 



5. E. W. 



Tilia Oliveri. By W. J. Bean (Kew Bull. 1914, p. 53). — A lime with foliage 

 silvery below as in T. tomentosa, and probably as ornamental and hardy as that 

 species. Native of China. — F. J. C. 



Tillandsia Benthamiana var. Andreuxii (Bot. Mag. tab. 8576).— C. 

 America. Nat. Ord. Bromeliaceae, tribe Tillandsieae. Herb, succulent. Leaves 

 clustered, ensiform acuminate, 6 inches long. Inflorescence spicate, 3 inches 

 long ; flowering-bracts ovate, rosy pink ; petals deep violet. — G. H. 



Tobacco, The Control of Diseases and Insects of. By James Johonns 

 (U.S.A. Agr., Exp. Stn. Wisconsin, Bull. 237, May 1914, pp. 1-34:9 figs.). — 

 This deals concisely with the principal diseases caused by fungi and insects of this 

 important economic species, and suggests various remedies which have been 

 found to be satisfactory in Wisconsin. They include systematic steaming of 

 the soil as a preventive of " bed rot " (Pythium and Rhizoctonia) and " root 

 rot " (Thielavia basicola Zopf.) and also as a means of killing weed seeds. For 

 the various rusts of tobacco, no completely satisfactory methods of control 

 have been evolved at present. For those diseases of packed tobacco, black rot 

 and other moulds, the regulation of the percentage of moisture and the tempera- 

 ture is suggested. 



The principal insects affecting tobacco are various caterpillars which are 

 destructive to the foliage. Spraying with a mixture of Paris green, 4 to 6 oz. 

 in 50 gallons of water, and the use of poison baits, are suggested as remedies. 



A. B. 



Tomato, Black Spot. By G. P. Darnell-Smith (Agr. Gaz. N.S.W. vol. xxv. 

 pp. 1069-1070). — In New South Wales much loss is caused to the tomato crop 

 by Black Spot. The spot is caused by the entrance of bacteria through the 

 damaged skin of the fruit ; the wound is then infected by Macrosporium. As 

 the fungus grows under the skin, spraying after the disease has appeared is of 

 little use. A regular supply of water and adequate shade prevent the disease. 

 Spraying with lime-sulphur or Bordeaux mixture checks the development of 

 Leaf Spot. Black Spot does not attack the round, smooth varieties of tomato 

 as readily as the crinkled, irregular-shaped sorts. — S. E. W. 



Tomato, Blossom-end Rot. By C. Brooks (Phytopathology, iv. pp. 345- 

 374 ; Oct. 1914 ; figs.). — This rot is well known in England, and is characterized 

 by the appearance of a. blackish spot near the style when the fruit is one-half 

 to two-thirds grown, which rapidly increases in size, finally spreading deep 



