Greenhouse Construction 
and Heating. 
CHAPTER I. 
INTRODUCTION. 
In these days of cheap glass, timber, and ironwork, a 
greenhouse of some kind, large or small, is within the reach 
of almost everyone, instead of, as of yore, a luxury attainable 
only by the rich. And a green—-or plant—house, if only of 
small dimensions, undoubtedly forms a very valuable and 
useful adjunct to any garden, while even per se it affords 
constant interest and amusement at all seasons of the year. 
Even in wet or very cold weather, when out-door work is 
almost if not quite out of the question, there is always 
something to be done, as well as to be seen, in the green- 
house; and even such light, yet necessary, operations as 
watering and training the plants, picking off dead leaves, 
sowing seeds and inserting cuttings, afford at once occupation 
and interest, while enabling the lungs to absorb freely the 
life-giving oxygen newly exhaled by the plants themselves. 
R 
