FORTY-FIRST ANNUAL REPORT. 



171 



After it is cooked, if not to be used at once, it should be strained into 

 a barrel AA'hicli should be air tight, as exposure to the air causes the 

 sulphur compounds to lose their value for spraying purposes. Each lot 

 that is cooked should be tested with a hydrometer when cooled and di- 

 luted according to the dilution table when applied: 



COMMERCIAL CONCENTRATED LIME-SULPHUR WASH. 



There are several brands of the "commercial" concentrated lime-sul- 

 phur solution now upon the market. The use of these instead of the 

 home cooked kinds is becoming more and more common every year, 

 especially by fruit growers who do not care to take the time or trouble 

 to cook the material for themselves or if they do not have good facilities 

 to do so. They are now reasonable in price, — of fairly uniform strength, 

 and do add to the ease of getting ready to spray as all that is necessary 

 is to dilute with the required quantitv of water. 

 ^- '' !^ IM I I ; i ;: , ; . ■ ^ n ' ^ . ^ - 



TESTING AND DILUTING CONCENTRATED LIME-SULPHUR. 



Every "batch" of the home made concentrated lime- sul- 

 phur wash will have to be tested when cooled to determine 

 its strength and it will be well to test the "commercial" 

 brands. This testing is done with a Baume hydrometer. 

 It is a simple instrument used to determine the weight and 

 density of liquids. It is made of glass, is about a foot 

 long, and has a graduated scale on the side. 



It is absolutely necessary that the hydrometer be kept 

 perfectly clean. If the solution is allowed to dry on it an 

 accurate test cannot be made. 



It can be purchased from dealers in druggists supplies 

 or from Bausch and Lomb Optical Company. Rochester, 

 N. Y., or Whitall Tatum Company, Philadelphia, Pa., or 

 Taylor Instrument Companies, Eochester, N. Y. 



(See last page for the rates of dilutions.) 



DILU^FE LIME-SULPHUR SOLUTION. 



For spraying on the foilage of apples, pears, European plums and 

 cherries but not on ])eaches or Japanese plums, grapes or potatoes. 



This solution can be prepared for use in several ways. 



First, The "Commercial" concentrated lime-sulphur solution can be 

 diluted to the proper strength. 



Second, The "home made" concentrated lime-sulphur can be diluted to 

 the proper strength. 



Third, The solution can be made at anj' time and in any quantity as 

 follows: Boil in a few gallons of water for one hour, ticice as many 

 pounds of sulphur as of lime, strain and dilute with water so there will 

 be 8 pounds of sulphur to every 100 gallons. 



Example: To make TOO gallons of spray solution, boil 8 pounds 

 of sulphur and 4 pounds of lime as directed. 



SELF-BOILED LIMB SULPHUR MIXTURE. 



This is a mixture of lime, sulphur and water and not like any of the 

 other lime-sulphur sprays. It does not (when properly made) injure 



