NINETEENTH ANNU IL MEETING. 171 



at a time, making- the formula 32 lbs. of lime and 32 lbs. of 

 sulphur to be cooked with a small quantity of water 1 <S or 10 

 gallons and then diluted to 200 gallons. 



Place the lime in a barrel and pour on enough water to 

 almost cover it. As soon as the lime begins to slake, add the 

 sulphur, which should first be run through a sieve to break 

 up the lumps. The mixture should be constantly stirred and 

 more water added as needed to form a thick paste at first and 

 then gradually a thin paste. The lime will supply enough 

 heat to boil the mixture several minutes. As soon as it is 

 well slaked, water should be added to cool the mixture and 

 prevent further cooking. It is then ready to be strained into 

 the spray tank, diluted and applied. 



The stage at which cold water should be poured on to 

 stop the cooking varies with different limes. , Some limes are 

 so sluggish in slaking that it is difficult to obtain enough heat 

 from them to cook the mixture at all, while other limes be- 

 come intensely hot on slaking and care must be taken not 

 to allow the boiling to proceed too far. . If the mixture is al- 

 lowed to remain hot fifteen or twenty minutes after the slak- 

 ing is completed, the sulphur gradually goes into solution, 

 combining with the lime to form sulphides which are inju- 

 rious to peach foliage. It is, therefore, very important, espe- 

 cially, with hot lime, to cool the mixture quickly by adding a 

 few buckets of water as soon as the lumps of lime have 

 slaked down. The intense heat, violent boiling and constant 

 stirring result in a uniform mixture of finely divided sulphur 

 and lime, with only a very small per cent of the sulphur in 

 solution. The mixture should be strained to take out the 

 coarse particles of lime, but the sulphur should be carefully 

 worked through the strainer. 



President Gold: This has been a very interesting and 

 instructive address, and I hope that Professor Scott will be 

 questioned freely- 



