171 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



in Kansas where, in the pardons of Dodge City, it is now infesting 

 apple, pt:ir. praeh, plum (both wild and cultivated), cherry, apricot, 

 plumcot, grape, currant, rose, Osage orange, cottonwood, and Russian 

 mulberry. The use of kerosene emulsion is recommended on the 

 glowing trees, and during the resting season the lime sulphur-salt 

 wash.— F. J. C. 



San Jose Scale : Test of Different Sprays. By W. E. Rumsey and 

 F. E. Brooks (U.S.A. Exp. Stn. W. Virginia, Bull. 107; June 1906).— 

 Concentrated soluble oils gave the best results, almost all the scale being 

 killed when the best of them were used. — F. J. C. 



San Jos6 Scale: Use of Miscible Oils for Treatment of. 



By P. J. Parrott, H. E. Hodgkiss, and F. A. Sirrine (U.S.A. Exp. Stn. 

 Geneva, Bull. 281; December 1906). — These oils, which are emulsions 

 of kerosene put on the market by various firms and sold under proprietary 

 names, have been tested against San Jose scale, and have been found 

 useless in the proportion in which they are recommended, viz. one part 

 of oil to twenty or twenty-five of water. They should be used at the rate 

 of about one part to ten or fifteen of water, and even then their use is not 

 followed by such good results as spraying with the boiled lime-sulphur- 

 salt solution. — F. J. C, 



Saxifrage scardica. By T. A. Sprague (Bot. Mag. tab. 8058). — 

 Balkan Peninsula. Nat. ord. Saxifragaccae ; tribe Saxifrageae. A tufted 

 plant. Leaves \-\ inch long, ciliate ; flowering stems 8 inches long, with 

 1-11 flowers ; petals 4^ lines long, white. — G.^II. 



Sequoia, A Weeping' (Sequoia gigantea ^w/w/a). — By Georges 

 Bellair (Bev. Hort. September 1, 1906, pp. 394,395; 1 fig.). - 

 Description and photograph of very markedly weeping form in the park 

 of Trianon ; branches absolutely lax and pendulous and very long. Dis- 

 likes lime and drought, needs deep loamy soil. — C. T. D. 



Shading-, Effects of, on Soil Conditions. By J. B. Stewart ( U.S., I . 

 Dep. Agr., Bur* of Soils, Bull. 39; 7 figs., 4 plates; February 1907). — 

 The cultivation of tobacco, pineapples, and certain market garden crops 

 under the shade of a tent or slat cover is steadily growing in the States. 

 The experiments recorded here prove that the tent conserves the moisture 

 in the soil to a marked degree by checking evaporation, resulting in great 

 benefit to the crop during prolonged drought. The temperature in the 

 tent wis from 1 to 3 above the normal throughout the season, the 

 variation being groatest during the heat of the day, and the relative 

 humidity was considerably greater. These differences in atmospheric 

 conditions result largely from the low velocity of the wind inside the 

 tent as compared with that outside. The average growth of the plants 

 in the tent was much greater than that outside, and maturity was reached 

 earlier; but the weight produced was less per acre by from 100 lb. to 

 300 lb. inside the tent, probably owing to tho fact that while the surface 

 exposed was larger the leaves were thinner. — F. J. C. 



