62 



RELICS OF PRIMEVAL LIFE 



the rare cases where the cylinders 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- 



i:. O •>■:■,.;■; ;Q'-b;-'0; '«v- 



.V.-.i-D;:P,yq-pvo'.0>^ 



Fig. 40. — Cross section of similar Tubiili to those in Fig. 39, more 



highly magnified^ and showim^ 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 



