Iv CONTENTS. 
AGE 
Difficulties with outside temperature . = 30 
iption and plan . s 31 
Plan of rentilator . ° 32 
Advantage of inside ranting : . ° . 33 
Plan of house hea’ . ° . 
tirapery for pot culture: » 
Plan of house for ° . . ° . 
Other houses suitable: « o - . . 36 
Retardin : 
Obj « . . ° . « 8 
Position and aspect . . ‘ . . 37 
Plan of double detatched ‘souls . + 38 
Mr. Webster’s method of ventilation - . 39 
CHAPTER. Tit. 
ARTIFICIAL HEAT AND APPARATUS. 
ee bik as is required 2 . ‘ « - 0 
ble, and wi why . “ ~ a ch 41 
Hot water the best . ° ° . 4 
Difference of material fer’ pipes, ae: . . . « 42 
Plan of boiler = - . 8 
Brick fiues, genera}: rrontis-on aoe - s. 
Drying and parching effects of flues = . - 6 
Size and capacity of flue and furnace . . - . 46 
Polmaise heating, remarkson . ‘ ‘ - & 
PI £ a, and ni re tinad 48 
P . . . . 
CHAPTER IV. 
BORDERS, OR PREPARED BEDS. 
ht « 
Bad. effects of unsuitable snare . ' . 
Nitrogenized manure not permanent « « 
bones and li « “ 
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