

u 



162 



RELICS OF PRIMEVAL LIFE 



the rare cases where the cyh'nders are filled with 

 serpentine, they are, of course, still more distinct 

 and beautiful. At the same time, I do not doubt 

 that observers who have not seen the true tubu- 





Fig. 40. — C;ow seciicn of similar TubuH to those in Fig. 39, w^r^ 



highly magnified^ and showini^ granular character of the test, 



(From camera tracings.) 



Fig. 41. — Comparison of Tubulate Wall and Prisms of Chrysotile in 



perspective. 



lation may have been misled by chrysotile veins 

 when these fringe the laminae. Mobius, for instance, 

 figures the true and false structure as if they were 

 the same. 



Protest should here be made against that mode 



