MAMMALS 



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may be kept in wide-mouthed bottles, or wide-mouthed tins with 

 friction or screw-top covers. Arsenic is a poison and should be 

 conspicuously labeled. 

 Dust this preservative over the entire inner surface of the skin 



Fig. 9. — Method of sewing lips. 



so that every part is covered. Shake surplus poison back into 

 the container and then sew the lips together by passing the needle 

 from side to side and then through the front of the two lips (fig. 9). 

 Knot the ends of the thread after drawing it tight. Turn the 

 skin right side out. If any blood or dirt still adheres, remove by 



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