|
Even in the coldest weather, once the temperature inside an igloo has been brought to 60° and kept there a while, mere body heat will ordinarily suffice to keep it comfortable thereafter. An igloo which has been iced over inside by the method indicated is strong enough to hold the weight of several men standing on its roof, although a sharp blow at one point will puncture it. Igloos are also nearly soundproof. But a man sleeping on the floor will feel, in a manner akin to hearing, any footsteps or vibrations coming from an appreciable distance. If the slope of the snow permits, the entrance can be made below the level of the floor. This prevents the escape of warm air except through the vent hole at the top and results in a much warmer igloo. Brush or a rucksack will serve as a door and permit control of ventilation. Lining the floor with fir boughs will provide additional warmth for sleeping. |
|||
|
