MOUNTING AND PRESERVING OBJECTS. 



65 



be blackened ; the other side is covered with white paper, on 

 which the name is written, b represents another plan, for very 

 minute objects; the pin is encased with blackened wax or 

 cement, or passes lengthwise through a small cork cylinder 

 Another method is seen at c, which consists of a small cylinder 

 of cork or felt with a pin passing transversely. These must 

 be blackened with common lacquer (shell-lac dissolved in alco- 

 hol) and lampblack, holding them over a candle to dry. 

 Sometimes these cylinders are made of ivory, with the inside 

 turned hollow like a small box ; the pin runs through them as 

 at c, and supports the object. The ivory is dyed black, and 

 the inner surface made as sombre as possible. Mr. Quekett 

 recommends to place the objects on pieces of cork glued to the 



Fig. 22. 



bottom, side, or cover, of small pill-boxes, as seen in Fig. 22. 

 Opaque objects should always be viewed with a black ground, 

 and the darker the object, the more sombre must be the 

 mounting. White is, of all colors, the worst which can be 

 employed, unless the object is totally black. 



6* 



