662 EXPEKIMENT STATION RECORD. 



Gelivure, gurmnosis, etc. , P. Yiala [Rev. Vit, 15 {1901), No. 384, pp- 461-464) • — 

 In a controversial article the author takes exception to the statement of Bonnet and 

 Ravaz that gelivure as a bacterial disease should be no longer recognized, claiming 

 this disease was due to the effect of lightning upontthe vines. The effect of electri- 

 city on vines, as shown by experiments of these authors, is given above. The author 

 of the present paper recounts his experiments and those of a number of others in 

 which inoculation experiments were conducted with bacteria from diseased vines, in 

 which the characteristic lesions were produced without any appreciable difficulty. 

 The same general condition of ^'ines is produced, the author claims, by the bacterial 

 disease which he has described under the name gelivure, by the injury of hail and 

 possibly by lightning. The different diseases which have been attributed to bacterial 

 agencies, the author says, are probably identical, and maintains that the first name 

 published was gelivure and that gummosis, maladie d'Oleron, and possibly mal nero 

 are identical. While not denying that lightning mjly cause effects that have been 

 confounded with bacterial disease, the author still maintains that there is a distinc- 

 tive bacterial disease to which grapevines are subject. 



Practical treatment for black rot and mildew, G. C.azeaux-Cazalet {Rev. 

 Vit., 15 {1901), No. 392, p. 677). — The relation between moisture, temperature, and 

 growth of fungi is discussed, and the most advantageous time for spraying said to be 

 during periods of low temperature, accompanied by rain. Spraying immediately 

 after a period of hot, rainy weather is said to be useless. 



Black rot and mildew, G. Cazeaux-Cazalet {Rev. Vit., 16 {1901), No. 396, pp. 

 68-71) . — Describes the essential characteristics of these diseases as shown upon the 

 leaves, the object being to enable growers to recognize the diseases in their different 

 stages and to know when to apply preventive treatments. 



Gray rot of grapes, J. M. Guillon {Rev. Vit., 16 {1901), No. 401, pp. 206-208).— 

 Describes attacks of Botrytis cinerea, which the author considers the cause of most of 

 the injury to vineyards in Charentes. 



Concerning gray rot, B. de Chefdebien {Rev. Vii., 16 {1901), No. 402, pp. 236- 

 238). — Gives methods for the preparation and use of sulphosteatite for combating 

 attacks of Botrijtis cinerea. 



Chlorosis of grapes, B. Chauzit {Rev. Vii., 15 {1901), No. 393, pp. 718-719).— 

 This disease is said to be most injurious on vines grown upon calcareous soils. It 

 may be wholly prevented by washing vines with a solution of iron sulphate, 400 gm. 

 to 100 liters of water. The salt may also be applied to the soil about the base of the 

 vine with advantage. 



Sulphuring grapes during flowering, P. Pacottet {Rev. VU., 15 {1901), No. 388, 

 pp. 582, 583). — The author concludes that the application of sulphur during flowering 

 is not only not injurious to the setting of fruit, but aids in jjollination, the blast of 

 air .scattering the pollen to a considerable extent. Applications at this time are said 

 to be very beneficial in reducing mildew. 



Sulphur and sulphuring, B. Chauzit ( Rev. VU. , 15 { 1901 ) , No. 388, j)p. 580-582) . — 

 Discusses the use of sulphur as a fungicide when applied as a powder or in various 

 chemical compounds. 



Copper fungicides and fine wines, P. Pacottet {Rev. VU., 16 {1901), No. 398, 

 pp. 129, 130). — The author claims that the use of certain fungicides exerts an. unfa- 

 vorable influence upon the quality of some of the fine wines. This is especially true 

 when resin, molasses, soap, etc., are added to increase the adhesive qualities of the 

 fungicide. The use of verdigris or other clear fungicide for the later sprayings is 

 recommended as not being injurious to the quality of the wine. If copper acetate 

 is used, the excess of acetic acid is eliminated in the processes of fermentation. 



Rhizophagus populinus, P. A. Dangeard {Botaniste, 7. ser., 1901, No. 6, pp. 

 285-287, pis. 2). — In 1896 the author gave a preliminary note on a disease of poplar 

 trees which was attributed to the above-named fungus. Since that time he has con- 



