IV CONTENTS. 



PAGB 



Difficulties with outside temperature ... 30 



Description and plan of house . . . . .31 



Plan of ventilator . ... 32 



Advantage of inside planting . . . . .33 



Plan of house heated by flue .... 34 



Grapery for pot culture : 



Plan of house for . . . . . .35 



Other houses suitable . ... 36 



Eetarding House : 



Objects of . . . . . .36 



Position and aspect . . . . . . 37 



Plan of double detatched house . . . .38 



Mr. Webster's method of ventilation . 39 



CHAPTER HI. 



ARTIFICIAL HEAT AND APPABATUS. 



Eeasons why it is required . . . . .40 



Steam not suitable, and why ..... 41 



Hot water the best' . . . . . .41 



Difference of material for pipes, &c. .... 42 



Plan of boiler . . . . . . .43 



Brick flues, general remarks on . . .44 



Drying and parching effects of flues . . . .45 



Size and capacity of flue and furnace .... 46 



Polmaise heating, remarks on . . . ... 47 



Plan of flue and polmaise combined .... 48 



CHAPTER IV. 



BORDERS, OR PREPARED BEDS. 



Importance of right preparation . 3 ;?-:,.-'. 49 



Bad effects of unsuitable materials . . * :lfr\: 49 



Nitrogenized manure not permanent . ,> . . 50 



Good properties of bones and lime . ",- . .52 



Evil of over-deep borders ; ." ^ , . >'..^>t'; 52 



The strongest growth not the best . . . *-, ? . 52 



Advantages of well -drained borders . . -, f - ,. . 53 



How to make the borders . . . . ,&?".- 53 



Good drainage retains the moisture . . . .54 



Advantages of making only a part at first * .. . ,"- .,^, 65 



Too much stimulating matter not good . . . .56 



