INTRODUCTION. XXXV 



calling them " anomalies ;" they are foraminiferal impos- 

 sibilities. We therefore cannot but commend Dr. Carpenter's 

 judgment in relinquishing all attempt to make them other- 

 wise in his " Final Note." This would be a much more 

 difficult matter than exclaiming : " As I should now no more 

 think of attempting to convince the Galway infallibles than of 

 trying to convert the Pope, I leave them in triumphant posses- 

 sion of the field I" 



Estructura de las rocas Serpentinosas y el Eozoon Canadense. 1874. 

 Juan Vilanova y Peira. Soc. Espan. Hist. Nat. vol. iii. 

 parts 2, 3. 



" States reasons for considering the Eozoon Canadense no 

 organism whatever, and asserts that what has been accepted as 

 the remains of a foraminiferous animal is merely the peculiar 

 mineralogical structure of serpentine and other allied rocks. 

 J. M'P." (See < Geological Record * for 1874, p. 325.) 



On the Occurrence of Eozoon Canadense at Cote St. Pierre. Dr. 1875. 



J. W. Dawson. Quart. Journ. Geol. Soc. vol. xxxii. 



pp. 66-75. 



One of the noticed specimens is of interest in showing a 

 presumed case of pseudomorphic replacement " the change of 

 calcite into serpentine ; " evidence of which consists in the 

 " walls of the skeleton [ f proper wall/] being represented by a 

 lighter-coloured serpentine than that filling the chamber, and 

 still retaining traces of the canals [ f nummuline tubuli']. The 

 walls thus replaced by serpentine could be clearly traced into 

 connexion with the portions of those still existing as calcite." 

 Until Dr. Dawson had penned these remarks he had nowhere 

 admitted any process of chemical change in connexion 

 with eozoonal structures ; we were therefore considerably sur- 

 prised to read what must be taken as placing him amongst 

 advocates of "extravagant" pseudomorphism. Dr. S. Hunt, 

 on one occasion, ridiculing the latter, exclaimed, " In this way 

 we are led from gneiss or granite to limestone, from limestone 



