305 FRENCH GARDENING, AND 
OTHER GARDENING UNDER GLASS ° 
which its makers claim many desirable things. It 
seems as if their claims were being well sustained by 
the experience of those using the Sunlight Double Glass 
Sash, as it is called. The frames are made of red 
cypress and are fitted with rustless springs and stops to 
hold the glass in the grooves and thus do away with the 
expense and bother of glazing. There is a space of dead 
air between the two layers of glass, which resists the 
cold from without, and prevents the escape of heat from 
withm. The sash are sufficiently air-tight for ordinary 
weather, and when the thermometer falls, the moisture 
which has gathered between the two layers of glass, 
freezes and seals the sash practically air-tight. 
The makers claim that Sunlight Double Glass Sash 
save more than half the labor, worry and expense of 
growing plants in cold-frames and hot-beds, and insure 
better plants, and, therefore, better crops, than can be 
secured under the same conditions from single-layer 
sash. They do away with the necessity of covering the 
frames with mats or boards, being warmer than the sin- 
gle-layer sash even though covered with mats or boards. 
Frames or beds filled with half-hardy plants, such as 
lettuce, cabbage or cauliflower, need no extra covering 
even in zero weather; and as far north as northeastern 
Ohio, with the thermometer nearly down to zero, even 
tomatoes, peppers and eggplants have been raised with- 
out additional covering, although this may not always 
be done. Light is never excluded from the growing 
plants by night or day, and in the short winter days of 
this climate, there is some advantage to that, Even 
