GREENHOUSES AND FRAMES 



327 



Roses are to be grown in the warmest compartment, it is customary 

 to place heating pipes under both side and center benches for bottom 

 heat, and to dry out the benches. The heating pipes are so arranged 

 and valved in both compartments that the temperature can be con- 

 trolled as desired. For heating a greenhouse 18 ft. x 50 ft., a small 

 square sectional water boiler is used.* There are no steam gauges or 

 complicated fixtures required on a hot-water heating apparatus. 



Section of a hotbed frame with details of measurements. Reproduced 



from a Cornell bulletin 



Frames and Their Uses 



The garden without its quota of frames is like an automobile with- 

 out tires; you may run it, but it is hard and slow work to get anywhere 

 with it. Frames, properly managed, will accelerate and supple- 

 ment the garden throughout the year. The frames (which you can 

 build yourself with little trouble if you do not care to buy them) and 

 the sash are not expensive. With reasonable care and if kept well 

 painted they will last indefinitely. The writer has a sash which has 

 been in continuous use for over twenty-two years. Concrete frames are 

 growing in popularity, as they can be built at little additional expense 

 and will last practically forever. They are tighter and warmer than 

 wooden frames, and they do not warp or settle, so that the sash always 

 fits them tightly, a very important point. 



