114 CAMELLIA CULTURE. 



This size boiler is calculated to heat one thousand 

 feet of four-inch pipe. 



I have only seven hundred feet of pipe to this small 

 boiler. 



Not only during the mild weather, but when it is 

 intensely cold, the draft door is closed to keep the tem- 

 perature down to sixty degrees. 



To heat the same house (1879), at present prices, with 

 smoke flues, it will be necessary to have two furnaces, 

 with flues of one hundred feet long, from each one. The 

 cost, everything included, will be ninety dollars. 



Smoke Flues 



Have been used by all of us for many years, and many 

 thousands are compelled to use them at the present day, 

 as a matter of economy. 



It may be so in the first outlay, but it will only be a 

 short time before the flues will crack and gas escape, de- 

 stroying more plants than three times the cost of hot 

 water. 



My experience with heating by smoke flues has been 

 very unsatisfactory. 



I have lost more plants from gas and smoke than it 

 cost me to erect the house in the first place. 



In very severe weather, the fires have to be urged to 

 their full extent, and I find that brick and mortar will not 

 stand the intense heat. 



The flues crack and give way, allowing the gas to es- 

 cape, destroying many plants in a short time, and further- 



