IV 



CONTENTS. 



DifiSculties with outside temperature • 



Description and plan of house . . , 



Plan of ventilator . . , 



Advantage of inside planting . , , 



Plan of house heated by flue . . 



Grapery for pot culture : 



Plan of house for ... , 



Other houses suitable . • • 



Retarding House : 

 Objects of . • • . . 



Position and aspect .... 

 Plan of double detatched house 

 Mr. Webster's method of ventilation 



CHAPTER in. 



AKTIFICIAL HEAT AND APPAKATUS. 



Reasons why it is required 



Steam not suitable, and why . 



Hot water the best 



Difference of material for pipes, &c. 



Plan of boiler 



Brick flues, general remarks on 



Drying and parching effects of flues 



Size and capacity of flue and furnace 



Polmaise heating, remarks on 



Plan of flue and polmaise combined 



CHAPTER IV. 



BORDERS, OR PBEPABED BEDS. 



knportance of right preparation . 



Bad effects of unsuitable materials 



Nitrosrenized manure not permanent 



Good properties of bones and lime 



Evil of over-deep borders 



The strongest growth not the best 



Advantages of well drained borders 



How to make the border? 



Good drainage retains the moisture 



Advantage? of making only a part at first 



Too much stimulating matter not good . 



TAGn 



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34 



35 

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86 

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