6. Coal-tar naphtha. This, as well as No. 3 (_above_), should never be
used by candle-light, as it is excessively inflammable. When the smell of
the common naphtha is objectionable, benzol or benzine may be used
instead. The celebrated nostrum vended under the name of 'Insecticide' is
said to be nothing but benzol.
7. Sulphurated potash (in powder), 6 oz.; soft soap, 1/2 lb.; oil of
turpentine, 1/4 pint or q. s. to make a species of soft ointment. The
odour of the last three (Nos. 5, 6, 7) is rather persistent and
disagreeable; but they are very effective.
8. Strong mercurial ointment, soft soap, and oil of turpentine, equal
parts, triturated together. Rather greasy and dirty.