RECIPES. 321 



LIQUID GLUE. 



Dissolve shellac in wood-naphtha at a very low temperature, until the 

 mixture is of the required consistency. 



It makes a very brittle varnish, but very good cells. 



BROWN VARNISH. 



Pure indiarubber 20 grains. 



Bisulphide of carbon q. s. 



Shellac 2 oz. 



Methylated spirit 8 oz. 



Dissolve the indiarubber in the smallest possible quantity of bisulphide of 

 carbon, and add this to the alcohol in such a manner that the whole is mixed 

 without the formation of clots. Now add the shellac, and place the jar con- 

 taining the mixture in boiling water, until the whole of the shellac is dissolved, 

 and the smell of the bisulphide has disappeared. 



GUAIACUM VARNISH. 



Gumguaiacum 2 oz. 



Shellac 2 oz. 



Methylated spirit 10 oz. 



Powder the guaiacum and dissolve it in the spirit, filter, and then add the 

 shellac. Keep the whole in a jar surrounded by warm water until dissolved. 



MATT VARNISH. 



Gum mastic 40 grains. 



Gumsandarac 1 60 grains. 



Methylated ether 4 oz. 



Benzol i| oz. 



BLACK MATT VARNISH. 



Gum mastic 50 grains. 



Gum sandarac 200 grains. 



Methylated ether ij oz. 



Benzol oz. 



Dissolve the gums in the fluids and triturate in a mortar with sufficient lamp- 

 black of the finest quality. 



MARINE GLUE. 



Indiarubber shreds 202. 



Shellac 20?. 



Dissolve the indiarubber in solvent mineral naphtha, add the shellac in 

 powder, and heat until liquefied, well mixing the whole together. It produces 

 a solid marine glue, and requires heat in its application. The author has it on 

 good authority that very little of the marine glue at present made contains a 

 particle of indiarubber. 



Y 



