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mouth. We then put the feet back into their 

 place, and do not use any preservative. We fill it 

 with very fine sand, by means of a small funnel, 

 which we pass into the mouth, leaving the two jaws 

 resting against it. We pour the sand into the 

 funnel, and direct its tube so that the body and feet 

 of the animal may be perfectly filled. When the 

 frog is quite full, we place it on a small piece of 

 board, shut its mouth, give it the attitude peculiar 

 toits species ; and some days afterwards, when it is 

 quite dry, we give it a coat of varnish. The var- 

 nish being hard, we bore some small holes under 

 the belly, through which the sand easily escapes, 

 and leaves the body empty, preserving its form. 



Frogs lose their colour in drying, and I do not 

 know any method of preserving them, unless it be 

 by putting them into spirits of wine, like small 

 lizards; these in their turn may be prepared with 

 sand, but they become brown like frogs. We suc- 

 ceed much better with toads; their skin already 

 brown and rough, preserves its colour. The small 

 species are better in spirits. 



Serpents. 



In some collections we see a great number of the 

 large adders of Guyana, but the head is always 

 wanting; thus these skins are worth very little to 

 naturalists, and the trouble which travellers give 



