18 g GROWING 



UNDER GLASS 



below 55 degrees it is too cold; you will have to 

 fork it over and add more manure. If the bed 

 gets to hot, you can ventilate it by making holes 

 with a sharp stick. 



Another way to make a hotbed is with fire. 

 On a large scale this is cheaper than manure. 

 Start six feet from the east end of your hotbed 

 and dig two trenches to about four feet west of 

 the hotbed. Give them a slight taper to create 

 a draught, and arch with vitrified tile, laying 

 two bricks on each side, lengthwise, a little bevel- 

 ing, and one brick crosswise to complete the 

 arch, and cover with dirt that was dug out of the 

 trenches; to these the flue from a small stove 

 supplies the heat. Unless you can get waste 

 exhaust steam, steam heat is only economical in 

 large houses. The care and expense do not pay 

 except where the business is on a large scale. 



There are ninety-five million square feet of 

 glass in the United States devoted to vegetables, 

 of which more than thirteen million feet are in 

 New York State. Under favorable conditions, 

 glass devoted to this work will earn an average 

 of fifty cents per year per square foot. 



