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Home › Cements And Uniting Bodies › Parlor or Congreve Matches
Parlor or Congreve Matches
Cements ements and Uniting Dissolve 16 parts gum-arabic in the least pos- ments and all substances intended to produce sible quantity of water, and mix with it 9 close adhesion, whether in a semi-fluid or parts phosphorus in powder (sec No. 4333); pasty state, freedom from dirt and grease is a then add 14 parts nitre ( saltpetre), and 16 most essential and necessary condition. Quite parts of either vermilion ( red sulphuret of as much depends upon the manner in which a mercury), or binoxide ( black oxide) of man- cement is applied as upon the cement itself. ganese, and form the whole into a paste. Dip The best cement that ever was compounded the matches into this paste, and then let them dry. When quite dry they are to be dipped into a very dilute copal or lac varnish, and again dried; by this means they are less likely to suffer from damp weather.