vi PREFACE. 
of planting vines inside houses, being more accessible 
for manuring the roots of them, and what is more im- 
portant, the roots can get the full benefit of the sun 
and air, and this is no doubt very necessary in all fruit- 
growing, especially with stone fruit and Grapes; for 
Grape-growing, moisture combined with sun-heat is 
most essential. 
I have studied for a long time the functionary con- 
struction and the active properties of plants, especially ; 
the vine, and I think I may say that I have found that 
warmth combined with moisture at the roots are the 
necessary conditions for well-coloured and fine fruit, 
an abundance of oxygen among the branches being 
likewise necessary for a good crop of fruit for the 
coming year. On these principles I have established 
my sharp angles and vine border-protector. } 
I believe it will be found that ‘ The Asparagus Pit,’ 
‘The Lily of the Valley and Christmas Rose Pit,’ ‘ The 
Gooseberry House, ‘The Potato House,’ ‘The Pea 
Frame,’ and ‘ The Wall Peach Screens,’ will recommend 
themselves, and be regarded as something new, and of 
some importance in their various capacities. The 
method of getting large onions, and in greater numbers 
will doubtless be a novelty with many persons. 
My method of glazing with ‘ clips,’ will be found 
equal if not superior to most others; and the plans, 
and careful estimates attached to the various arrange- 
ments for building, glazing, and heating, will I hope 
meet the wants of the horticultural enquirer. 
