CEMENT. 1 1 7 



ARSENICAL COMPOSITION. 



Mr Laurent's Receipt. 



A distinguished French naturalist,, Laurent, recommends 

 the following composition, after ten years' experience, for pre- 

 serving the skins of stuffed animals. He observes, at the same 

 time, that it penetrates them with greater readiness, and pre- 

 serves them much better than any preparation which has 

 hitherto been in use. 



Arseniate of Potash, - - - 2 drachms, 



Sulphate of Alumine, - - - 2 do. 



Powdered Camphor, - - - 2 do. 



White Soap, powdered - - - J oz. 



Spirits of Wine, - - - - 6 oz. 



Essence of Thyme, - - - 3 drops. 

 The arseniate of potash, sulphate of alumine, and soap, are 

 to be placed in a phial, with a large mouth, and the spirits of 

 wine to be poured on them, at a heat of twenty-Jive degrees, 

 and they will be perfectly combined in twenty-four hours. 

 The essence of thyme is then added, when the phial must be 

 carefully corked. This composition is to be shaken together, 

 before it is made use of, and it must be spread over the skin of 

 the animal or bird with a brush. 



SOLUTION OF PEARL ASHES. 



Two ounces of pearl-ash to one gallon of water. 



ANNEALED IRON WIRE. 



Take common iron wire, make it red hot, and suffer it to 

 eool gradually ; this renders it soft and pliable, so that it may 

 be easily bent in any direction. 



CEMENT. 



Fine Whitening, - - ., - - 2 02. 



Gum Arabic, - - - - - g 02. 



Finest Flour, - - - - - | oz. 

 Ox- Gall, a tea-spoonful. 



