178 ANIMAL RESOURCES AND FISHERIES OF UNITED STATES. 



50. APPARATUS AND METHODS OF MAKING AND MOUNTING SKINS, 



TAXIDERMl. 



Tools. 



Haying-tools. 



Scraping-tools. 



Taxidermists 7 tools for stuffing : 



Forceps. 



Pliers. 



Preservatives and insect-powders. 



Arsenic and arsenical soap. 



Corrosive sublimate. 



Salt, alum, &c. 



Persian insect-powder. 



Tobacco, snuff, used as preservatives. 



Frames, &c. 



Wooden frames. 

 "Wire frames. 

 Plaster model-bodies. 



61. (ACCESSORY.) PHOTOGRAPHIC AND OTHER DELINEATING^ APPA- 

 RATUS. 



Photographic apparatus. 



Lenses. 



Cameras and fittings. 



Camera tripods and stands, with model. 



Fish Commission stands. 



. Model of Fish Commission camera-stand. U. S. Fish Commission. 



This stand is employed in taking photographs of large fishes. It 

 enabling the photographer to operate his camera vertically. 



Plates, and their results: 

 Wet plates. 

 Dry plates. 

 Dark closets. 



Camera-obscuras* 



Mechanical delineators. 



Methods of heliotyping and engraving illustrations* 



