METHODS OF PKEPARATION. 55 



49. APPARATUS FOR MAKING CASTS, &c.— Continued. 



b. Frames and modeling tools. 

 11; c. Molds: 



Of plaster. 

 Of gelatine. 

 Of paper. 

 Of paraffine. 



50. APPARATUS AND METHODS OF MAKING AND MOUNT 

 ING SKINS. TAXIDERMY. 



a. Tools: 



Flayiug-tools. 



Scraping-tools. 



Taxidermists' tools for stufi&ng : 



Forceps. 



Pliers. 

 6. Preservatives and insect-powders : 

 Arsenic and arsenical soap. 

 Corrosive sublimate. 

 Salt, alum, &c. 



XT 



Persian insect-powder. 



Syringes for application of insect-powder. 

 Tobacco, snuif, used as preservatives. 



c. Frames, &c. : 

 Wooden frames. 

 Wire frames. 

 Plaster model-bodies. 



51. (ACCESSORY.) PHOTOGRAPHIC AND OTHER DELINEAT 

 ING APPARATUS. 



a. Photographic apparatus : 

 Lenses. 



Cameras and fittings. 

 Camera tripods and stands, with model. 

 Fish Commission stands. 

 Plates, and their results : 



Wet plates. 



Dry plates. 



Dark closets. 

 h. Camera obscuras. 



c. Mechanical delineators. 



d. Methods of heliotyping and engraving illustrations. 



