ENTOMOLOGY. 993 



of tin* development and life history of the San Jose* scale and of the means bj \\ hich 

 it i- distributed. Evidence was obtained in one case thai the San Jose* Bcale may be 

 Bpread by means of wagons and farm implements. In applying artificial methdds 

 for controlling San Jose* scale the chief reliance of the fruit grower should be placed 

 in lime-sulphur-sall \\ ash. 



The formula for this insecticide recommended by the author calls for I'l lbs. lime, 

 is lbs. sulphur, and 50 gal. water. This mixture should be boiled for 35 minutes or 



more. Where boiling is inconvenient the use of caustic BOda may be depended upon 



to produce a mixture nearly a> good as the boiled lime-sulphur wash. Applications 

 should be made in Louisiana in the winter. Brief notes are given on insecticide 

 apparatus and on summer treatment, where it appears to be necessarj . 



Spraying- for the San Jose scale, J. S. Houseb ( Ohio Sta. Bui. 169, pp. / 

 pis. 6). — A large number of formulas ^•t« - used for boiled lime-sulphur-sall washes 



in which the ai mt of lime varied from 15 to 31 lbs., the amount of sulphur from 



71 to I6jj lbs., the amount of salt from 15 to Hi lbs. per 50 gal. of water for winter 

 applications, while for summer use lime-sulphur washes were used in which both 

 the lime and sulphur varied from I to ID lbs. per 50 gal. of water. Spring treatment 



was also given, using self-boiled washes containing from L5 to 32 lbs. of lime, 8 to in' 

 lbs. of sulphur, and l to L2 lbs. of lye or caustic soda per 50 gal. of water. 



Of the hi different formulas used for boiled lime-sulphur-salt washes all of those 

 which contain 15 ll»s. or more of lime and sulphur per 50 iral. of water gave satisfac- 

 tory results in all cases. Salt seems to add nothing to the persistency of the wash 

 nor to it- effectiveness, and the same was found to he true of copper sulphate and a 

 large excess of lime. Copper sulphate added t<> the mixture had apparently no addi- 

 tional fungicidal effect. The addition of glue was of no value in making the wash 

 adhere longer. 



Con-Sol was tested in the treatment of San .lose scale, hut appeared to he of no value. 

 The use of kerosene limoid did not give satisfactory results. Scalecide is easily 

 applied and appears not to be irritating to the skin. Better results were obtained 

 from this than from any of the other proprietary insecticides. 



The author prefers the use of the lime-sulphur mixture containing at least 15 lhs. 

 per 50 gal. of water. This insecticide can not he applied to trees while they are in 

 foliage. The prevalenceof leaf curl in orchards is greatly checked by the use of lime- 

 sulphur washes. The preferred formula is 15 to 20 lhs. lime and 15 lhs. sulphur in 

 50 gal. of water boiled for 45 minutes and applied in the spring or fall. The most 

 satisfactory method of boiling is found in the u-e of steam. 



San Jose' scale, A. B. Cordley (Oregon Sla. Ilul. 88, pp. 1~>, ph. :>). — The lime- 

 sulphur-salt wash is considered the best spray for cleaningup trees, in addition to 

 its power of holding the San Jose* scale in check when applied once annually. The 

 attention of orchardists is called to the fact that the wash can not he used as a sub- 

 stitute for Bordeaux mixture when the trees are in leaf, hut should he applied as a 

 winter treatment only. 



Notes are given on the f 1 plants, appearance, development, and distribution of 



the San Jose* scale. The formula preferred in ( ►regon for the lime-sulphur-salt wash 



is 1-1-1-3, and it is recommended that the mixture be boiled for at least 1 hour. The 

 natural enemies of San Jose* scale can not he depended upon in < Iregon for controll- 

 ing the pest. A number of experiments were carried on with lime-sulphur-salt in 

 various forms, some containing caustic soda and copper sulphate. The scales were 



not completely eradicated in any case, hut since the spraying was done on badly 

 infested trees, the effect of the liine-sulphur-salt wash was considered satisfactory. 



Acariosis of grapes, II. Faes ( <'hr<>n. Agr. I''/'"/, 18 ! 1905), Ac. 16, pp. 879-400, 

 />/. t,fig8. 0). — The nature of the disease referred t<» under these names has often 

 been misunderstood. The diseases are due to attacks of l'h>/i<»j>tns vitis, a mite which 



