Collodion, Elas′tic

Prep. 1. (Lauras.) Heat together Venice turpentine, 2 parts; castor oil, 2 parts; and white wax, 2 parts; add sulphuric ether, 6 parts; and mix all with the product of No. 3 ( above ), that is, to the collodion formed with 8 parts of prepared cotton, 125 ether, and 8 alcohol. 2. (C. S. Rand.) Di olve prepared cotton (No. 5, above ), 2 dr., in sulphuric ether, 5 fl. oz.; then add, Venice turpentine, 2 dr., and complete the solution by slight agitation. Obs. The collodion made by either of the above proce es, when applied to the skin, forms a transparent pellicle, more pliable and more difficult to remove than that of ordinary collodion.