SErEXTEENTH ANNUAL MEETING. 



97 



Discussion. 



A Member : Respectins;- the temperature — how do you 

 tell when you get it 300 degrees ? Most all our thermometers 

 onlv register to the boiling point. 



Prof. Jakxis : I have here a thermometer which I have used 

 for this purpose. It is graduated from zero up to 330 degrees. 

 This particular thermometer may be secured from the Eimer 

 & Amend Company, 211 Third Avenue, New York. The 

 price is $1.00. There are different types of thermometers and 

 I would suggest one graduated from 200 to 310 degrees; have 

 the graduation at the top of the thermometer so to project 

 above the cover of the kettle. The kettle should be provided 

 with as tight a fitting cover as possible, which prevents loss 

 from steaming and foaming. It is well to have the tight fit- 

 ting cover and a bole bored through the cover, through which 

 a perforated stopper may be placed, a hole just large enough 

 to accommodate this thermometer. It is held there in position, 

 and you can see at anytime the temperature as it rises. The 

 kettle should not be more than one-third or one-half full, at 

 least, to allow for foaming. At a particular stage in the cook- 

 ing the foaming amounts to considerable, and it may _be neces- 

 sary to subdue the fire at that time ; when it reaches 225 or 260 

 degrees then the foaming ceases. 



A Member: Have you this mixture that you can send 

 out? 



Prof. Jarvis : For experimental purposes only ; we can- 

 not attempt to make it for the trade. I wish we might, as 

 we would then get it in more general use throughout the 

 State. Arrangements have been made with a Manchester soap 

 firm, J. T. Robertson & Company, to produce a soluble oil, 

 after the formula recommended here. They are not just sat- 

 isfied yet in regard to the price they may furnish it at, but 

 it will probably be from thirty to thiry-five cents a gallon by 

 the barrel. This firm is thoroughly reliable, and if anyone 

 wants it in small amounts and do not feel like making it up 

 themselves, you may write this firm and they will furnish it, 

 also the emulsifier. 



