Structure of Eozoon canadense. 



281 



have been dissolved awaj, we have sucli a Serpentinous 

 fabric as is represented in fig. 1 ; in which we recognize those 

 general features of conformity to the Foraminiferal type which 



Fig. 1. 





Stnicture of Eozoon canademe. 



were first pointed out by Professor Ehrenberg as exliibited in 

 the Green-sands of various Geological periods, with details 

 which accord most remarkably with those of particular types. 



2. Although, in its indefinite zoophytic mode of growth, 

 Eozoon diftered from the Nummulites and Orhitoides to which 

 Mr. Carter refers, yet it agrees with Polytrema'^ ^ a type which 

 was formerly described as a Millepore, but which I have 

 shown to be a wildly-growing Rotalian. Further, in its im- 

 perfect segmentation, only interrupted occasionally by a com- 

 plete chamber-partition, it agrees with Carpenteria\^ another 

 Rotalian ; my description of which, as of the preceding, and 

 my references to them in my account of Eozoon^ it is of course 

 only consistent in Mr. Carter to ignore, on his principle of not 

 reading any thing on the other side. 



3. The general plan of the Calcareous fabric, as wc should 

 see it if we could dissolve out the Serpentine, is shown in 

 fig. 2, which was constructed from sections in my possession 

 by the conscientious and intelligent drauglitsman Mr. George 

 West, to whom I was indebted for those admirable constructive 

 representations of various types of recent Foraminifera whose 

 accuracy no one has ever challenged J. This shows the suc- 



* Introduction to tlie Study of Foraminifera, p. 235. 



t Op. cit. p. 18G. 



\ A most remarkable proof of this accuracy was afforded by the fact 

 that JNIr. G. West's reconstruction of the complicated canal-system of 

 PolyitomeUa ('Introduction to the Study of tlu; Foraminifera,' pi. xvi. 

 fig. 1) was made four years before I obtained the internal cast (lig. J)), 

 which verified it to the minutest particular. 



