98 ~ra^ tZLX*&^&^lZ?* %$£?T&SL 



down, partly from the air escaping, partly from the heat, and 

 from the pressure which is used in applying the different sub- 

 stances : air must again be supplied from time to time to prevent 

 it from losing its form. This becomes particularly necessary 

 when glass is applied, and when it is extended over the whole 

 surface of the iris. 



The eye having got its form and size, the pipe is taken away. 

 To effect this, after the air has been introduced, the entrance of 

 the pipe is stopped with the finger, and the back part of the eye 

 exposed to the flame ; when the air contained in the globe, and 

 rarified by the pipe, comes through at the place where the flame 

 has most action. This opening is prolonged by turning the point 

 of the flat pincers, or an iron-wire, all round the pipe ; one point 

 only is left by which the eye remains fixed. It is then warmed 

 equally all over, after which it is exposed to a gentle heat, and 

 when it again cools, it is separated from the pipe. 



ARTICLES REQUIRED FOR SKINNING AND MOUNTING QUAD- 

 RUPEDS, BIRDS, REPTILES, AND FISHES. 



1. A box containing scalpels of different shapes ; apair of scissors 

 with pointed blades, and two or three pointed forceps of dif- 

 ferent sizes, the extremities of one of which ought to be in- 

 dented. 



2. Two flat pincers, or pliers, large and small. 



3. A round pincer for turning wire. 



4. A cutting pincer for wire. 



5. A hammer. :; ^ 'v. 



6. Two files. ' : : ; :: %l 



7. A triangular. 



8. Points for perforating holes. 



9. A saddlers awl for drilling holes ; also various shoemakers 

 awls, which will be found useful. 



10. Brushes of different sizes for putting the preservative on the 

 animals' and birds' skins, and for smoothing and dusting 

 the feathers. 



11. An assortment of iron-wire of all sizes. 



12. Flax and tow, coarse cotton. When these cannot be had, un- 

 twisted ropes or cords. A quantity of tow and flax slivers 

 for twisting round the leg-bones of small quadrupeds and 

 birds. 



13. Some small hardwood meshes for assisting in stuffing. 



