THE MONTHLY BULLETHST. 



557 



The average commercial lime-sulphiir solution tests from 33 to 34 

 degrees on the Baume scale, as compared with 29 to 30 degrees for the 

 home-made solutions and thus requires, according to the scale of spray- 

 ing equivalents, onlj- 4.5 gallons of solution to the 200-gallon spray tank 

 for summer spraying, while the home-made 30 degree solution requires 

 five gallons. Apparently there is considerable difference, but the home- 

 made solution has cost only 7 cents per gallon, making the cost of the 

 tank 35 cents, while the carload rate of 16 cents per gallon on com- 

 mercial lime-sulphur brings the latter to 72 cents per tank; thus there 

 is effected a saving of 37 cents per tank by the use- of the home-made 

 material; and the saving in the equivalent of a carload of 34 degree 

 commercial lime-sulphur amounts to $247. A cut of half in the cost of 

 materials is not to be scorned in any business operation. 



Fig. 114. — The boiler and stairs. (Original.) 



The chemistry of the lime-sulphur solution is no more complicated 

 than those changes which go on in Bordeaux mixture, and yet no one 

 hesitates on this account to make his own Bordeaux. The past two 

 j^ears have shown the ranches the absolute necessity of economizing 

 wherever possible, and if there is reason to believe that a cut can be 

 made in any operating expense it should be attempted. 



*See, also, Injurious and Beneficial Insects, State Commission of Horticulture, 

 page 468. 



4—20434 



