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GAS AND HEAT.
WHAT a valuable servant is Gas, and how dreadfully we should cry out were it to be banished from our homes; and yet no one who loves his books should allow a single jet in his library, unless, indeed he can afford a "sun light," which is the form in which it is used in some public libraries, where the whole of the fumes are carried at once into the open air.
Unfortunately, I can speak from experience of the dire effect of gas in a confined space.

Some years ago when placing the shelves round the small room, which, by a euphemism, is called my library, I took the precaution of making two self-acting ventilators which communicated directly with the outer air just under the ceiling.

For economy of space as well as of temper (for lamps of all kinds are sore trials), I had a gasalier of three lights over the table.

The effect was to cause great heat in the upper regions, and in the course of a year or two the leather valance which hung from the window, as well as the fringe which dropped half-an-inch from each shelf to keep out the dust, was just like tinder, and in some parts actually fell to the ground by its own weight; while the backs of the books upon the top shelves were perished, and crumbled away when touched, being reduced to the consistency of Scotch snuff.