ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 401 



Eozoon Canadense.* — Mr. G. P. Merrill, in an article on Warren 

 County Ophiolite or Verdantique Marble, remarks that the serpentization 

 of pyroxene is destined to throw some light on the Eozoon problem. He 

 suggests that we have in the alteration in situ of the pyroxene granules 

 the source of the serpentinous material, and that the mineral pyroxene of 

 the white or colourless variety, which often occurs in the lower layers 

 and fills some of the canals of Eozoon, is merely the residual mineral 

 which has escaped alteration. 



* Amer. Joum. Sci., xxxvii. (1889) pp. 189-91. 



