NOTES AND ABSTEACTS. 



719 



the probable name of Bacillus phytophthorus, was attributed at first by M. 

 G. Delacroix to an organism described as Bacillus solanacearum, but 

 subsequently he has been led as the result of his examinations to state 

 that the disease in question is not to be attributed to that organism, but 

 to another, which he has called Bacillus solanicola. The attacked plants 

 wilt suddenly, and after a time leaves and stalks become discoloured and 

 die. The pith is found to turn brown, with small warty spots on the 

 stems, and droplets of dirty white liquid exude. This liquid is full of 

 bacteria. This disease is spread by inoculation caused by the bite of 

 insects ; it is also associated with the web-like ground fungus Rhizoctonia 

 solan i. The first step is to spray with a poisonous mixture, and destroy 

 those insects which feed from plant to plant. One ounce of Paris green 

 in ten gallons of Bordeaux mixture will effect this. Carefully dig round 

 the diseased plants, and prevent the spread of web-like fungus to healthy 

 plants. Root up and carefully burn diseased plants. Tomatos, Potatos, 

 Egg-fruit, Black Nightshade, Cape Gooseberry, &c, harbour the germs of 

 the disease. — M. C. C. 



Trees, Doctoring unhealthy (Journ. Hort. August 20, 1903, 

 p. 170). — An Indian entomologist has invented a method of introducing 

 into the stems of Apple and Pear trees salts of iron, by which chlorose 

 (pale foliage) is cured, and the vigour of the tree much increased. 

 Injecting sulphate of copper has also in many cases a beneficial effect. 

 The editor remarks that this discovery opens a wide field of practical 

 utility.— C. W. D. 



Trees in Paris (Gard. Mag. No. 2597, p. 526; 8/8/03).— An 

 interesting discussion on the merits of the various kinds of trees planted 

 in Paris. — W. G. 



Trees for Shade in New Mexico. By Fabian Garcia {U.S.A. 

 Exp. Stn. Neiv Mex. Bull. 47 ; 29 figs). — Advocates the planting of trees 

 along roads, giving practical hints for their culture, and a good list of 

 plants suitable for the purpose and for the ornamentation of ground 

 around houses. — E. A. B. 



Trees for Shade in Wyoming". By Aven Nelson (U.S.A. Exp. Stn. 

 Wyoming, Bull. 57 ; 5 plates). — Shows clearly what might be done to 

 beautify a treeless district, giving directions for planting and preserving 

 suitable trees. — E. A. B. 



Trees, Transplanting Large. By W. Dallimore (Gard. p. 355 ; 

 21/11/03). — When making new gardens or altering old ones it is often 

 found necessary to remove trees which are too large to lift in the ordinary 

 way and which it is not desirable to destroy. To move large trees 

 successfully move a large mass of soil with them, and to do this planks 

 and rollers or lifting machines must be used. This article gives instruc- 

 tions for carrying out this work and is illustrated, the photograph showing 

 a tree in process of removal. — E. T. C. 



Trees, tightening their roots when newly planted (Journ. 



Hort. June 4, 1903, p. 489). — Newly-planted trees often fail to thrive 



