PLATE IV. 



INSTR UMBNTS- 



Figs. 1, 2, 3, stuffiug rods ; like Fig. 1 should be two or tlii-ee feet long, made of bard 

 wood and tipped with steel, notched ; and like Fig. 2 of light steel rod, tliree 

 feet long for large mammals. Fig. 3 should be 18 inches long for small 

 mammals. 



Figs. 4, 5, 6, box-wood modeling tools. 



Figs. 7, 8, 9, steel modeling tools. 



