178 ANIMAL RESOURCES AND FISHERIES OP UNITED STATES. 



50. Apparatus and jrExiioDS or imakino and mounting skens. 



TAXIDERMY. 



Playing-tools. 



Scrapmg-tools. 



Taxidermists' tools for stuffing : 



Forceps. 



Pliers. 



Preservatives and iMsect-powders. 



Arsenic and arsenical soap. 



Corrosive sublimate. 



Salt, alum, &c. 



Persian insect-powder. 



Tobacco, snuff, used as preservatives. 



Frafiues, &:c. 



Wooden frames. 

 Wire frames. 

 Plaster model-bodies. 



51. (Accessory.) Photographic and other delineating appa- 



ratus. 



Phottog^raphie apparatus. 



Lenses. 



Cameras and fittings. 



Camera tripods and stands, with model. 



Fish Commission stands. 



. Model of Fish Commissiou camera-stand. U. S. Fieli CommissioiL, 



Tliis stand is employed in taking jihotograplis of large fishes. It 

 enabling the photographer to operate his camera vertically. 



Plates, and their results : 

 Wet plates. 

 Dry plates. 

 Dark closets. 



Cainera-obseuras. 



Mechanical delineators. 



Methods of heliotypingr and engrraving' illustrations* 



