ABSTRACTS. 



791 



Arsenite of soda = white arsenic 1 lb., sal soda (washing soda) 

 4 lb., water 2 gallons, are boiled together for fifteen or twenty minutes, 

 when the arsenic will have dissolved ; replace the water lost in boiling. 

 With every fifty gallons of water use two quarts of the stock solution 

 and two pounds of freshly slaked lime. Keep the stock solution covered 

 to prevent evaporation. 



To become acquainted with the moth, catch a few worms and put 

 them into a bottle ; put a few pieces of paper in with them and cover the 

 bottle with some wire gauze. In about twelve or fifteen days some of 

 the worms will have developed into small brownish moths, with very 

 noticeable dark brown spots, streaked with bronze near the hind angle of 

 the front wings. 



The cost of the different spraying mixtures is given below per fifty 

 gallons wash : — 



White arsenic bought in 10 lb. lots . 4<r7. per lb. 



Paris green „ 28 lb. lots . 8d. per lb. 



Sal soda ,, 125 lb. kegs . 7s. per keg. 



Lime . . . . ... .2s. per 100 lb. 



Paris Green Mixture — ' 



Paris green, 4 oz 



2d. 





Lime, 1 lb. 



OJflL 





Cost per barrel 



2^d. 





Arsenite of Lime — 







White arsenic, 4 oz. . 



Id. 





Lime in stock solution, \d. per lb. 



Oid. 





Freshly slaked lime, 1 lb 



Old. 





Cost per barrel 



l±d. 





Arsenite of Soda — 







White arsenic, 4 oz. . 



Id. 





Sal soda, 1 lb 



Old. 





Freshly slaked lime ..... 



Ohd. 





Cost per barrel 







Cost of spraying a 30-acre orchard, first spraying : 









£ s. 



d. 



Four men, 5 days @ 3s. 2d. per day . 



3 2 



6 



White arsenic, at 5d. per lb., 4 oz. per barrel, 







90 barrels 



0 9 



6 



Sal soda @ l± 2 d. per lb., 1 lb. per barrel, 90 barrels 



0 11 



3 



Lime at \d. per lb., 4 lbs. per barrel, 90 barrels . 



0 7 



6* 



Total . 



M 10 



9 



The figures are not exact on account of rates of exchange, etc. 



The second spraying was done with Gould's " Monarch Two-cylinder " 

 spray pump, mounted on a 500-gallon tank, with two lines of hose. It 

 took three men seven days, and cost 3s. 3d. more than the first spraying, 

 the same amount of materials being used. 



* Used 2 lbs. per barrel more than ordinarily. 



