NOTES AND ABSTRACTS. 



173 



the plants would then have plenty of time to establish themselves and 

 develop their leaves during the following summer. They may also be 

 moved successfully in the autumn after they have finished their growth. 



E. T. C. 



Roses: Origin of 'Leuehstern' and 'Frau Karl Drusehki.' 



By Cochet-Cochet (Le Jar din, vol. xxi. No. 480, p. 56 ; with 3 figs. ; 

 February 20, 1907).— ' Leuchstern ' (CP.), distributed by J. C. Schmidt, 

 1898, was a sport from Turner's 'Crimson Rambler.' 'Frau Karl 

 Drusehki ' (H.P.), distributed by Peter Lambert, 1901, was produced 

 by fertilization of ' Merveille de Lyon ' by ' Mile. Caroline Testout.' 

 One of the three resulting seeds was raised, and flowered for the first 

 tjme ;n 1897. It was first known as ' Schnee-Konigin.' — F. A. W. 



Salvia cyanea (Le Jardin, xxi. No. 486, p. 146 ; May 20, 1907).— 

 Recently introduced from Central America. Discovered at Costa Rica 

 by M- C. Werckle. Has quadrangular winged stems, with oboval, 

 dentate, bright green, glabrous leaves. Close panicles of brilliant sky-blue 

 flowers resembling Coleus thyrsoideus. Blooms from December all 

 through the winter. Invaluable for the greenhouse. — F. A. W. 



San Jose, or Chinese Scale. By C. L. Marlatt (U.S.A. Dep. Agr., 

 Bur. Entom., Bull. 62; December 1906). — A most important bulletin, 

 authoritatively summarising all the information concerning this pest, 

 which was introduced to America about 1875 from China, and has now 

 to be reckoned with in all culture of deciduous fruit trees in all the 

 principal fruit-growing areas of the States, and has proved by far the 

 worst of the many troublesome scale insects infesting cultivated plants. 

 Full notes on its life-history, native home, insect and fungus enemies, 

 and means of control are given, and the bulletin is well illustrated by 

 figures, maps, and plates. — F. J. C. 



San Jose Scale. By J. S. Houser (U.S.A. Exp. Stn. Ohio, Bull. 

 109 ; 6 plates ; January 1906). — This scale insect appears to be steadily 

 spreading, and to well merit its name " perniciosus." Numerous 

 experiments with sprays have been tried with more or .less success, 

 and the two most advocated at the present time are kerosene and sulphur 

 sprays. As the result of experiments a spray fluid composed of 15 lb. to 

 20 lb. lime and 15 lb. sulphur boiled together in sufficient water to make 

 a thick liquid for at least forty-five minutes, and afterwards diluted to fifty 

 gallons, was found to be the most effective and practicable remedy. The best 

 time to apply the wash is in the spring, but in cases of extreme infesta- 

 tion it may be advisable to make both a fall and a spring spraying. It is 

 important to strain the solution, so that no large particles get into the 

 sprayer strainers, and all the working parts of the pumps and nozzles 

 should be made of brass. The spray should be applied as quickly as 

 possible after it is made, and all the articles used should be thoroughly 

 washed with clean water at the end of each day's work. — F. J. C. 



San Jose Scale. By E. A. Popenoe (U.S.A. Exp. Stn. Kansas, 

 Press Bull. 150 ; April 1906). — The San Jose scale has just been found 



