68 DAIRYING 



help to preserve it from decay. Whatever the material used, the 

 floor should be given a pitch of about one inch in four to five 

 feet to the gutters. 



660. Trap in floor drain. A trap should alawys be built in 

 the floor drain or gutter. One placed inside the building is espe- 

 cially convenient for cleaning. It may be made by placing under 

 the floor at some point a simple box so that the gutter forms 

 a part of the cover. This cover can be easily taken off and 

 the dirt which collects in the trap removed. 



661. Painting. Painting inside the factory may be done 

 satisfactorily with the cold water paints, which have no odor 

 and can be used at any time without danger of injuring the 

 quality of either milk, cream, or butter in the room painted. The 

 outside painting of a creamery ought to be given careful attention 

 and a fresh coat put on every two years at least. A newly 

 painted, neat-looking creamery, is an ornament to any locality 

 and reflects the quality of the milk and cream received and 

 the butter sold from it. 



662. The smoke stack. The smoke stack or chimney for 

 the boiler should be at least 30 feet high and extend 10 or more 

 feet above the roof. A good draft through the grate is important 

 for the most economical use of fuel. In this connection it may 

 be added that constantly poking the fire to keep up steam is a 

 great waste of fuel ; it will pay therefore to provide a good 

 draft for the fire. In some places this may be done by connecting 

 the exhaust steam from the engine with the smoke stack or 

 chimney; this steam, however, will shorten the life of either 

 chimney or stack by rusting the iron and disintegrating the 

 mortar and brick. A chimney will last longer than an iron stack 

 of the same height, but it will cost more and will not give 

 so good a draft on account of the two turns necessary to make 

 connections with the boiler, the iron stack being placed directly 

 on the boiler. 



663. Windows and ventilators. The creamery windows 

 should be loose fitting, as steam swells them. They ought to 

 be made to open at the top for ventilation, as well as at the 

 bottom. There should be a ventilator in the roof to carry off 



