208 



RELICS OF PRIMEVAL LIFE 



rate thin layers at Cote St. Pierre. In Fig. 51 I 

 have shown some of the singular grains found in 

 the loganite occupying the chambers of Eozoon 

 from Burgess, and in Fig. 54 some remarkable 

 forms of this kind found in the limestones of Long 



Fig. 54. — ArchaospherincB from Long Lake Limestone, 



(Magnified.) 



(a) Single cell, showing tubulated wall. (*, c) Portions of same more highly mag- 

 nified, {d) Casts decalcified, and showing casts of tubules. 



Lake and Wentworth. All these, I think, are 

 essentially of the same nature, namely, chambers 

 originally invested with a tubulated wall like 

 Eozoon, and aggregated in groups, sometimes in a 

 linear manner, sometimes spirally, like those Globi- 

 gerinae which constitute the mass of modern deep- 



