OR, A TREATISE ON PILE. 



75 



transversely by lines still darker; intermediate fibres, slightly colored; a coloring matter 

 also at other times in the centre, interrupted. 



Trial with the Trichometer of one inch of an Oval Hair, April 1st, 1849. 

 With 270 grains it stretched -fa of an inch, elasticity entire. 



" 



" 



" 

 11 



-fa 

 -fa 

 -fa 

 -fa 

 -fa 



" 

 " 

 < 



" 

 " 



" 

 " 



" 

 " 

 " 

 



minus 



(i 

 u 

 u 



A 



9^ 



s 



'go 



.8. 







11 



and broke. 



Fracture fibrous. 



One inch of another hair from this specimen, which was cylindrical, was tried with the 

 Trichometer immediately afterwards, with the following result: 



With 100 grains it stretched Jj- of an inch, elasticity entire. 

 " 300 " " _ 2 - " " " 



" 400 " " -^. <' " " 



550 " " _t^ it 



" " " " 



" 



" 

 " 



650 

 700 

 750 

 800 

 850 

 900 



" 



u 

 u 

 (i 

 11 



!< 

 11 

 11 

 II 

 II 



II 



minus 



u 

 u 



*_ 



19 



