ANIMAL RESOURCES AND FISHERIES OF UNITED STATES. 177 



Preservative mixtures* 



Carbolic acid. 

 Chloral hydrate. 

 Picric acid. 

 Osmic acid. 



Labels. 



Metallic labels. 

 Parchment labels. 

 Indelible ink, pencils, &c. 



48. APPARATUS FOR PRESERVING AND MAKING SKELETONS. 



Preparation of the bones. 



Macerating- vats. 



Boiling-vats. 



Cleaning and bleaching preparation. 



mounting of* the bones. 



Scraping-tools. 

 Articnlanng-tools. 



49. APPARATUS FOR MAKING CASTS. MODELING. 

 Materials. 



Clays. 



Plasters. 



Glues. 



Papier-mache and carton-pierre. 



Gelatine. 



Paraffine. 



Collodion. 



This apparatus and material is in constant use by the assistants in tho 

 National Museum and the Fish Commission. It is thought scarcely nec- 

 essary to exhibit it. 



Frames and modeling tools. 



Molds : 



Of plaster. 

 Of gelatine. 

 Of paper. 

 Of paraffine. 



Bull. N. M. No. 14 12 



