266 INDEX 



PAGE 



principles of . . . . 158 



hot water vs. steam . . ' 159 



with cast iron pipes . 154 



with flues ... 159 



High pressure steam heating . 196 



Hotbed 



construction of ... 10 



described ... 2 



heating by flues ... . 23 



location for ... 11 



manure for ....... 21 



permanent, plans for . ... 19 



sash for .... . H 



temporary, plans for . . 20 



Hot nvater heating . . ... 159 



advantages of ... 159 

 arrangement of pipes for .... 169, 178 



estimating radiation for .... 171,176 



general principles of ..... 167 



pipe for . . . . . . . . 173 



pressure systems ... ... 183 



Irrigation . 240 



overhead ....... 240 



sub-irrigation . . 241 



Light 



loss by absorption . . . . . . 97 



loss by reflection . . . . . . 44 



Location 



for greenhouses ...... 35 



for hotbeds ....... 11 



M 



Mats, sash-bed 31 



Manure for hotbeds 21 



Paint 



estimating ... 117 



for iron work ..... 116 



for shading ....... 118 



kinds of 116 



Painting 114 



"Pecky" cypress 77 



