GUARDING AGAINST FROSTS. 205 



since that time I liave been in an orchard near Chicago where 

 10 acres were equipped with heaters and they allowed 120 

 pots to the acre and they raised the temperature 10 degrees 

 and this result was accomplished in about 30 minutes from 

 the time of lighting the pots, 



Mr, Dickinson : How many heaters could a man light in 

 an hour? 



Mr, Mincer : I should say a thousand, easily. It is simply 

 a matter of getting to the heaters. If there is a danger of 

 frost and you are in a hurrs^ — the orchard that I saw 

 equipped I helped the man light them up, there was a heater 

 between every 4 trees we ^^cre r-'.yi V ■} with a gasoline torch 

 and we difln't have to stop. 



A Member : Are these heaters equipped with a little waste? 



Mr. Mincer : No sir, nothing, 



A Member: Just provided with pure oil? 



Mr, Mincer: Yes sir. 



Mr. Dickinson: I did not think the heat was intense 

 enough to light the pure oil. 



Anothor IMember: Were the heaters on the ground? 



Mr. Mincer: Yes sir, we filled the heaters and placed the 

 seal over them to prevent the rain from getting in before the 

 time of using them. 



Mr. Youna:ers : In reference to storing oil, in Talifornia it 

 was stored in cisterns, in some places thev would run it right 

 from the car into the cistern with a hose. 



Mr. Mincer : My reason for storing it in a tank is that we 

 have a bank risrht near our orchard and T am going to put 

 the tank on that bank. I can run it riirht from my wagon 

 tank into the tank and I wont have to lift it then. 



A Member: Has it been successful running water through 

 the orchard to keep the frost off? 



Mr, Mincer: There has been some of that done very suc- 

 cessfully in Colorado. 



A Member: Do you know of any reports? 



Mr. Mincer: T can not srive vou the number of the Colorn'^o 



