For the purpose of deodorizing a room in which there is an offensive smell, common coffee berries, and even rags or brown paper, if properly burned, will serve admirably. The smoke from these substances not only neutralizes the odors, but really acts as a disinfectant to a slight extent. In burning coffee, paper or rags for this purpose, care must be taken to prevent them horn, burning too freely. If they burn with a free, bright flame, the proper effect will not be produced. They should be allowed to smoulder quietly, and they do this best when they are thrown on hot coals, or a hot shovel and set on fire.
An excellent substitute for pastils is heavy brown paper, which has been dipped in a solution of nitre and then dried. This burns freely without flame, and if it be dipped in a solution of benzoin, the odor is very pleasant. The best thing, however, is pastils. They are easily made as follows:
Benzoin, 2 oz.; balsam of tolu and yellow sandal wood, of each 4 drachms; nitre, 2 drachms; labdanum, 1 drachm; charcoal, 6 oz. Reduce to powder, mix thoroughly and make into a stiff paste with gum tragacanth. Form into small cones and dry them in the air.
Powdered benzoin, 16 parts; balsam of tolu and powdered sandal wood, each 4 parts; charcoal powder, 48 parts; powdered tragacanth and labdanum, each 1 part; powdered nitre and gum arabic, each 2 parts; make into a paste with 12 parts cinnamon water, form into cones and dry.
3. The following formula is somewhat complex, but gives very fine results: Take the charcoal of any fight wood, 200 parts; gum benzoin, 100 parts; powdered sandal wood, 50 parts; balsam of tolu, 50 parts; Storax (Styrax calamita), 50 parts; gum olibanum, 50 parts; cascarilla bark, 100 parts; cloves, 40 parts; cinnamon (Ceylon), 40 parts; potassium nitrate, 75 parts. Reduce the ingredients to powder, and mix them with oil of Ceylon cinnamon, 5 parts; oil of cloves, 5 parts; oil of lavender, 5 parts; balsam of Peru, 10 parts; camphor, powdered, 1 part. Then add mucilage of tragacanth sufficient to make a mass which is to be formed into conical cylinders about 3/4 to 1 inch high, and ending at the bottom in three projections. Dry them in a warm place.