311 
Winter. Send them also a rough sketch of ground plan 
of house, and they will tell you exactly what size boiler 
you need and the amount of pipes it will take to produce 
the desired temperature. They will ship you the boiler 
and pipes with plans and instructions, so that the ordi- 
nary village plumber can put them together in good 
working order. We have been using one of their boilers 
and pipes here for many years, and it gives complete 
satisfaction. The ventilation of a greenhouse is also an 
important matter, and without the proper appliances is 
a very troublesome job Messrs. Hitchings & Co. have 
also a patent ventilating apparatus that should be in 
every greenhouse, and will also figure on it for any one 
by giving the style of the house and the number of sash 
to be raised. A whole house is ventilated by the simple 
turning of a wheel or handle. It saves much time and 
- labor and is a most desirable apparatus. We use it here 
and can ventilate all our houses in less than five minutes 
that previously took half an hour todo. The sash can 
be opened just as much or as little as desired, and when 
closed or open they cannot be moved or shaken by the 
wind. A greenhouse without a ventilating apparatus of 
this kind would be very incomplete. After your green- 
house is complete, your pipes and boiler working all 
right, and your ventilating machinery in good order, 
before you can begin the operations of general greenhouse 
work, there is une more important item I wish to speak 
of, and that is 
FLOWER POTS. 
A good supply of pots of different sizes must always be 
kept on hand where a greenhouse is kept up and plants 
grown in any quantity. Small pots, two and one-half 
inches in diameter, are small enough for any purpose, 
and are most suitable for potting up seedlings or young 
cuttings from the seed bed. Hundreds of thousands of 
this same two and a half inch pot are in use by the florists 
all through the country, as two-thirds of the plants they 
cultivate are grown in this size pot. The range of sizes 
from two and one-half inches up to twelve in diameter 
are the dimensions most generally made; where pots 
larger than twelve inches in diameter are needed for 
large specimen plants, tubs or boxes are preferable, as 
