On Eozoin Canadense. 357 
es 
ime. The relations of the carbonate and the silicates are well 
the soft parts of the Eozodn. The form of the sarcode which 
filled the chambers and cells is beautifully shown, as well as the 
although very perfect specimens are sometimes found in pyrox- 
ene. Tl 
in most cases to have disturbed the calcareous septa. 
“Serpentine and pyroxene are generally associated in these 
herent mass of serpentine is obtained, which is a perfect cast of. 
Specimens, as if their deposition had marked different stages of 
the serpentine without any interruption or change. Some sec- 
tions exhibit these two minerals filling adjacent cells, or even 
isle of the same cell, a clear line of division being visible 
between them. In the specimens from Grenville, on the othe 
hand, it would seem as if the development of the Eozoén (con- 
siderable masses of which were replaced by pyroxene) had been 
interrupted, and that a second growth of the amimal, which was 
Aw. Jour. Sct.—Szcoxp SznrEs, VoL. XL, No. 120.—Nov., 1865, 
46 
