THE DAWN OF LIFE 



153 



of " funnels " and tubes penetrating the mass (Figs. 33, 

 34), a confluence of the laminae, constituting a porous 

 cortex or limiting structure. Specimens of this kind 

 were figured in 1888, and I was enabled to add to the 



Fig. 34. — Section of the Base of a specimen of Eozoon. 



This specimen shows an oscuHform, cylindrical funnel, cut in such a manner 

 as to show its reticulated ivall and the descent of the laminae toward it. Two-thirds 

 of natural size. From a photo,;^raph. Col. Carpenter, also in Redpath Museum. 



[This illustration (from Prof. Prestwich's "Geology," vol. ii. p. 21) has been 

 courteously lent by the Clarendon Press, Oxford.] 



characters of the species that the original and proper 

 form was "broadly turbinate with a depression or 

 cavity above, and occasionally with oscula or pits 

 penetrating the mass." The great flattened masses 

 thus seemed to represent confluent or overgrown 



