THIRTY-EIGHTH ANNUAL CONVENTION 307 



Boiler Room. 



The boiler should always be of sufficient size to furnish all 

 the steam needed without forcing the fire. It should have a 

 dome, as this insures dryer steam and greater efficiency. The 

 brick wall around the boiler should be well built. A good quali- 

 ty of brick should be used, and some cement should be used 

 instead of using all lime mortar. A boiler of 36-inch diameter 

 should have a wall 20 to 24 inches thick ; three to four bricks 

 in the inside wall, and two bricks in the outside wall, leaving a 

 two-inch air space between the two walls. This air space may 

 be filled with ground asbestos, which will provide good insula- 

 tion and prevent leakage of air if any of the walls should crack. 



Space here will not permit discussing the setting of the 

 boiler in detail, but we wish to say that it is of the greatest im- 

 portance to have the boiler set right and have a good wall 

 around it, as it means a saving of fuel every day the boiler is 

 used. The smokestack should always be of sufficient size and 

 height to furnish good draft for the boiler, and if it is used for 

 ventilation also it should be built large enough so the draft to 

 the boiler will not suffer. Where a brick smokestack is built, 

 the smoke flue from the boiler can be connected with the smoke- 

 stack either below or above the ceiling, whichever is the most 

 convenient. 



The foundation for either the steam or gas engine should 

 be substantial and well built. It should be started at least two 

 feet under the floor level, and some rocks may be used in the 

 bottom, while the rest of the foundation should be made of con- 

 crete, as this is fully as cheap and better than any other material 

 that may be used. 



Gasoline Engines. 



The gasoline engine for creamery or cheese factory use is 

 attracting considerable attention now, and there can be no doubt 

 but that it is more economical than steam in a great many 

 creameries. The creameries that receive hand separator cream 

 only will generally find that by using a gasoline engine and a 



