70 CANADIAN FARM YEAR BOOK. 



Best prepared in quantities of 24 lbs. at a time to get sufficient heat' 

 Place 24 lbs. lime in a half barrel, add enough cold water to start it 

 slaking well and to keep the sulphur off the bottom. Dust the 24 lbs. 

 sulphur over the lime, having first worked the sulphur through a screen 

 to break lumps, then add whatever further amount of water is necessary 

 to complete the slaking. Stir well with a hoe to prevent the lime 

 caking on the bottom. As soon as the slaking is over, add enough 

 cold water to cool the whole mass and previsnt further combination. 

 Strain into spray tank. Keep well agitated while spraying. 

 III.— DISINFECTANTS (for pruning tools and for wounds on trees).— 



1. — One pint formalin diluted to 2 gals, with water. 



2. — Corrosive sublimate, 1 part to 1000 by weight = 1 tablet to 1 pint 

 of water. Apply with a swab on end of a stick. 



Caution. — Corrosive sublimate is a deadly poison to man or beast 

 if taken internally. It will also corrode iron or metal, so use in a glass 

 or wooden vessel and be sure to wash these out very thoroughly when 

 through using them. 



3. — Lime-sulphur about twice spring strength, or bluestone, 1 lb. dissolved 

 in about 14 gals, water may be used to disinfect wounds or cankers, 

 but is not satisfactory in case of pear blight. 



STICKER 



Resin 2 lbs. 



Sal Soda (crystals) 1 lb. 



Water 1 gal. 



Boil together till a clear brown color, which takes from 1 to 1^ hours. 



Cook in an iron kettle in an open place. Add the above to 40 gallons 



Bordeaux for use on smooth foliage like onions, cabbage or asparagus. 



If used with arsenate of lead, Paris green, or arsenate of lime, add 1 



to 2 lbs. of fresh lime to every 40 gallons of spray. 



Information on Dilution. 



To determine how much to dilute for different applications use an hydro- 

 meter with specific gravity readings, and apply the following rule: 



Put the hydrometer in the clear liquid when it is cold, and the sediment has 

 all bee settled for a doy or two. Note the number to which it sinks. Suppose 

 this is 1:240. The strength for use before the buds burst should be 1:030 or 

 stronger. To determine how much to dilute a strength of 1:240 to get 1:030, 

 divide the three figures to the right in 1:240 by 30, that is 240 divided by 30=8. 

 This means that each gallon of such a wash must be diluted to 8 gals, with 

 water to give us a strength of 1:030, the proper spring strength. For the sec- 

 ond application 1:000 is about the right strength. To get it divide the 240 by 9, 

 which gives 2 2-3, or roughly speaking 27. This means that each gallon of a 

 wash of the strength of 1:240 must be diluted to 26 2-3, or 27 gals, to make 

 the right strength for the second application. For the third application and any 

 later ones 1:008 is about the right strength, and to get this we proceed in the 

 same way and divide 240 by 8=30, so that each gallon must be diluted to 30 

 with water for this application. If the strength of the concentrated were 1:212 

 or any other number, you would in the same way divide the three figures to 

 the right by 30, 9 and 8 respectively to get the proper dilutions for each spray- 

 ins. 



Note. — Commercial lime-sulphur should be tested with the hydrometer and 

 diluted according to the same rules as the home-made concentrated form. 



