The Recommendations of 1886. 97 



cacious are those in which sulphate of copper is used ; (3) that 

 the mixture of lime and ashes, and of lime and sulphur, have 

 not as yet given results sufficiently satisfactory to enable us to 

 recommend their use ; (4) among the liquid remedies, the milk 

 of lime prepared so as to make it convenient for application, 

 has proven quite satisfactory ; however, its use from a practical 

 and economical standpoint encounters in many places serious 

 difficulties ; (5) that the remedies most successful in the results 

 obtained are the mixed liquids or solutions containing sulphate 

 of copper." 



This portion of the report closes with an article on Ska- 

 winski's powder as a fungicide, giving its history, composition, 

 and use. On the pages which follow are described several 

 fungi found upon the grape and also some occurring upon other 

 plants. Among the latter may be found an account of the cel- 

 ery leaf-blight which is of interest here on account of a remedy 

 which is mentioned for its prevention: "I would hesitate to 

 recommend the application of solutions containing the salts of 

 copper on this vegetable, for hygienic reasons. A solution of 

 penta-sulphuret of potassium, or liver of sulphur, 1 to 2 ounces 

 to a gallon of water, sprayed upon the plants at the first appear- 

 ance of the blight, may arrest its progress. This preparation 

 deserves a trial in this case." The use of this substance was 

 probably suggested by the English papers, which at this time 

 contained many accounts of its value for the control of certain 

 fungous diseases. 



Remedies for the orange-leaf scab are also suggested, three 

 of the preparations named being, " a solution of bisulphide of 

 potassium, one-half ounce to a gallon of water ; the Grison 

 liquid . . . ; to 10 gallons of strong soap-suds add about a 

 pound of glycerine and one-half pint of carbolic acid." 



Regarding the treatment of potato rot, only suggestions are 

 made. A trial of Podechard's powder, and of David's powder, 

 are recommended. 



The curing of pear blight is looked upon as an almost 

 hopeless task, and unfortunately we are now little nearer the 

 solution of the problem than at that time. The report says 

 that "spraying offers little hope of success. . . . An experi- 

 ment tried during last season in spraying with a solution of 

 hyposulphite of soda, applied several times during the period 



