512 



Appe7idix. 



the caustic soda ; let this boil for some time, and then add the dissolved 

 soft soap and full quantity of water. 



LIME-SULPHUR-SODA-SALT WASH. 



Formula. 



Preparation. 

 Mix the soda and lime together and slake with some hot water, in 

 which the sulphur has been incorporated, and then bring up to the full 

 10 gallons. This mixture is also self-boiling. 



Uses. 

 For destroying the jDear-leaf blister mite and as a scalicide. 



Application. 

 On dormant wood only. In case of the pear, spraying must cease as 

 soon as the bud scales are fully opened. A heavy spraying is best. 



ARSENICAL WASHES FOE MANDIBULATE INSECTS. 



ARSENICAL WASHES. 



A. Arsenate of Lead. 



B. Paris Green. 



C. Calcium Arsenate. 



D. London Purple. 



E. Arsenite of Soda. 



A. Arsenate of Lead, 



Formulae. 



Preparation. 

 Dissolve both together in the water and well stir and then add 1 lb, 

 of treacle. 



