CONSTRUCTION OF GREENHOUSES I29 



186. The boiler. — The boiler should be of ample capac- 

 ity to maintain proper temperatures; forcing a boiler 

 means a waste of fuel, and the boiler itself will not last 

 so long. There are several types of boilers on the 

 market. The most important point to consider in select- 

 ing a- boiler is to see that the construction is of such a 

 type that the greatest heat will be realized from the fuel 

 consumed. The flames should strike the sections of the 

 boiler at right angles, and the connection with the smoke 

 pipe should not be too direct. Sectional and tubular 

 boilers are in most common use in greenhouse heating. 



187. The work room. — In every greenhouse establish- 

 ment there is a great deal of work to be done in the way 

 of seed sowing, transplanting, potting and preparing 

 crops for market. Nothing is more important than a 

 commodious room where all the work can be done in 

 perfect comfort. This room should be well lighted and 

 properly heated and ventilated. Tables of the right 

 height are necessary, and a small room for tools will be 

 found very convenient. 



