TRANSACTIONS OF SECTION C. 659 



In his latest paper, however, Mr. Waters/ after reviewing: Mr. Ulrich's work 

 ou the Palaeozoic Bryozoa '-' of America, remarks (p. 53) : ' I would urge the 

 importance of a thoroufrh comparison of PaLTOzoic with Cretaceous genera, for 

 the numher of known Cretaceous genera is very large, and with these and the 

 present fauna comparison can he made, thus giving the best stepping-stone between 

 the rich carboniferous fauna and the recent.' Such a comparison would be of 

 great value to the paleontologist, but the comparison must be made with actual 

 examples of the fauna from the several formations, and not with figures or mere 

 descriptions of the same. During the last twenty years some thousands of 

 examples from all formations have passed through my bauds, and possibly some 

 light could be thrown upon the question indicated by ^Mr. Waters, but ample 

 space and special illustrations are necessary to do the work well. 



' Ann. Mag. Nat. Hist. s. t. vol. viii. p. 53, July 1891. 



^ Geology and Palaontology, vol. viii. Geol. Survey, Illinois, 1890. 



u u 2 



