THE FLORAL WORLD AND GARDEN GUIDE. 
357 
ing the escape of heat ; for if on cold stormy nights, or in heavy 
falls of snow, it runs through the covering, and trickles down the 
glass, it is quite certain it cannot do so without abstracting a con- 
siderable portion of heat in its progress. I think a waterproof and 
air-tight substantial cloth, supported two inches above the glass, is 
nearly perfect as can be ; and those who make the experiment will 
find (though expensive at the first) that in a few years they have 
avoided the general rule in such matters, viz., that of being “ penny 
wise and pound foolish.” Where pits are heated sufficiently by hot 
water or Hues, the expense of covering may be avoided ; but, in all 
cases of very severe weather, it will be found more advantageous to 
cover than to use much firing — not because of the expense of the 
fire, but to avoid the dryness of atmosphere, inevitable where a high 
internal temperature has to be maintained at the same time that all 
the moisture contained in the atmosphere is being condensed upon 
the cold glass. All forcing houses would be best covered in severe 
weather, especially where it is indispensable to maintain a high 
moist temperature ; and where fuel is dear, I think the expense of pro- 
viding good waterproof covering would soon be covered by the saving 
in fuel. It may not be out of place to give our great horticultural 
builders a hint, which, if carried out, would offer considerable facili- 
ties to gardeners in large establishments, and that is, in making a 
new garden to have the whole of the sashes of the same size, so that 
the sashes of a late might be placed over an early Peach house or 
Vinery, and thus form the best covering that could be had for such a 
purpose. In the practical management of covering, of course it is 
important in severe weather that cold pits and frames should be 
covered up before the glass becomes frozen, and while there is yet 
some heat in the frame ; in continued frosts such pits are better 
covered up than exposed in the daytime if the atmosphere is dry, 
and indeed with the cloth covers sufficient light is admitted for all 
plants in a state of hybernation for several weeks together, especially 
if care be taken afterwards not to expose the plants to strong sun- 
light, until they have been exposed to moderate light for some few 
days. 
ANGELONIA GEANDIFLOEA. 
HIS is a really useful plant for summer decoration, pro- 
ducing spikes of pine-apple scented flowers very freely, 
and remaining in beauty for months ; being also of 
quick growth and easy culture, useful sized specimens 
of ic may soon be obtained. Cuttings selected of short- 
jointed, rather firm bits of the young shoots should be put in early 
in summer, placing them in a moderate bottom-heat, where, with 
proper care in watering and shading, etc., they will emit roots in a 
few weeks, and may then be potted singly in small pots. Heplace 
them in a warm, moist situation after potting, and guard them from 
the direct rays of the sun until they become established in their 
Dec ember. 
