of one of the arsenical poisons should be mixed up finely 

 powdered with 160 gallons of Bordeaux mixture. The 

 'Bordeaux mixture is prepared by adding to 40 gallons of hot 

 water, 6 Ibs. of powdered sulphate of copper and 4 Ibs. of 

 powdered unslaked lime. The mixture should be always 

 neutral. If there is an excess of sulphate of copper, it is apt 

 to injure the foliage. To see if the mixture has been properly 

 made or not, the clean blade of knife is to be dipped into 

 it for a minute. If the knife is untarnished the mixture 

 is all right, but if the knife is stained a coppery colour, more 

 milk of lime is to be added. 



1.161. As an all round combined fungicide and insecticide, 

 may be also mentioned the sulphur, lime and salt wash. Take 

 40 Ibs. of unslaked lime, 20 Ibs. of sulphur, 15 Ibs. of salt, and 

 50 gallons of water. Boil the sulphur with 10 Ibs. of lime 

 for not less than ij hours or until the sulphur is thoroughly 

 dissolved, in a strong iron (not a thin copper) boiler, when the 

 mixture will be a light amber colour. The remaining 30 Ibs. 

 of lime is to be slaked with hot water and when thoroughly 

 slaked but still boiling, 15 Ibs. of salt are to be added. When 

 this is dissolved, the whole should be added to the lime and 

 sulphur in the boiler, and the combined substances boiled 

 for half an hour longer, when water, to make the whole 

 up to 50 gallons, should be added. Then straining should be 

 done through wire sieve and the mixture should be well stirred 

 before use. After using this mixture, the spraying machine 

 must be thoroughly washed with hot water. 



1.162. Another standard fungicidal solution is the Eau 

 Celeste. This is made by mixing i Ib. of sulphate of copper 

 with 2 gallons of hot water. When cool \\ pints of commer- 

 cial ammonia (strength, 22 Baume,) are to be added. The 

 solution is to be kept tightly corked and when it is required 

 for use, it should be diluted with 20 gallons of water. The 

 Eclair Vaporiser may be used in spraying both the Eau 

 Celeste and the Bordeaux mixture. 



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