ruction, in that all disagreeable effluvia are absorbed
by the charcoal, so that comparatively pure air is alone inhaled.
Adaptations may be made to cover the nostrils as well as the mouth,
for protecting the wearer against fevers and other infectious
diseases, and chiefly for use in chemical works, common sewers, &c.,
to protect the workmen from the noxious effects of the deleterious
gases to which they are frequently exposed.

1777. Charcoal applied to Sores, &c.

Charcoal powder has been most successfully employed at hospitals, to
arrest the progress of gangrene and other putrid sores. The charcoal
does not require to be put immediately in contact with the sores, but
is placed above the dressings, not unfrequently quilted loosely in a
little cotton wool. In many cases patients who were rapidly sinking
have been restored to health.

1778. Disinfection of Rooms.

Any room, however offensive it may be, can be perfectively deodorized
by means of a few trays filled with a thin layer of freshly-heated
wood charcoal. From these and other considerations it is evident that
charcoal is one of the cheapest and best disinfectants. Unlike many
other disinfectants, it evolves no disagreeable vapours, and if heated
in close vessels will always act, however long it has been in use,
quite as effectively as at first. The efficiency of the charcoal may
be greatly increased by making it red-hot before using it. This can
easily be done by heating it in an iron saucepan covered with an iron
lid. When the charcoal is to be applied to inflammable substances,
such as wooden floors, &c., of course it must be allowed to cool in
close vessels before being used.

1779. Sir William Burnett's Disinfecting Fluid.

Of late years new disinfectants for the removal of disagreeable and
offensive odours, and the preservation of meat, &c., have been brought
into use. Sir William Burnett's disinfecting fluid is too well known
to require description. It is invaluable in a sick room, and is sold
by all chemists and druggists.

1780. Glacialine.

This is a new disinfectant and antiseptic, which is highly recommended
and largely used for the preservation of meats, liquids, and all goods
of a perishable character from acidity, as in the case of beer, or
decomposition. It is sold by most chemists, druggists, and oilmen.

1781. Chloride of Lime.

This substance, which is we