Rustic Adornments , 
placed on top of the perforated zinc ; or better still, another piece of perforated 
zinc may be obtained one inch larger than the internal measurement of the 
propagator each way. This should be bent up all round, and nailed in about 
one inch above the other, the intervening space having been previously filled 
with asbestos fibre. Any lamp with a one-inch wick, provided that it will 
hold sufficient oil to burn through the night, will be suitable to heat the above 
apparatus. It is best to get a tin chimney made for the lamp at first starting, 
L - J Fig. ii. LJ 
References to Fig. n—i, Glass ; 2, Soil; 3, Zinc; 4, Iron Tray ; 5, Steam Pipe, 
as glass is so apt to break, that it is a continual expense. To ensure perfect 
safety, it is well to nail pieces of tin or zinc over the inside of the lamp 
chamber and the bottom of the under case. This applies more especially to 
those who have their propagators indoors, or who use open lamps. 
The second or permanent class of propagator is represented by Fig. 12. A 
contrivance of this kind can only be utilised in greenhouses heated with hot- 
water pipes. It should always be fixed over the pipes nearest to the boiler, 
so that the greatest amount of heat may be obtained. Get some inch-and-a- 
3 - 
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