26 TIIK ICK A(!K IN CANADA. 



Much of the inatLi'f coutaiiu'd in these detached 

 publications now re(iuircs ri'vision, more es])eciaily the 

 lists of I'ossils ; and many additional facts have accunni- 

 lated. I ])ur})ose, therefore, now to smnmari/e the facts 

 and conclusions of my previous ])apers and to uinte them 

 with the new facts, so as (o })resent as complete a, view as 

 possible of the ,neolotry of the superficial dej)Osits of 

 Canada. 1 shall also i)rei)are a comph^te list of the fossils 

 up to date, with revised nomenclature end synonymy. 

 In this last ])art of the work I have l)een aided by the 

 late Dr. V. V. Carpenter and Mi'. AVhiteaves. 1 have had 

 the beiieHt, in the case of several critical species, of the 

 advice of the late Air. .1. (}. Jefl'reys, the late Mr. 11. 

 MacAndrew of London and Mr. Dall of Washin,i;ton. I 

 am also indebted to My. (J. 8. Uradv for determinin<f the 

 Ostracoda, to the llev. H. AV. Crosskey for opportunities 

 of com]>arin<j; s])ecimens with those of the Clyde lieds, 

 and to Prof. T. J(. Jones and Dr. Tarker and Mr. 0. M. 

 Dawson for help with the Foraminifera. Other mimes of 

 contributors of information will be mentioned in the notes 

 and in the lists of fossils. 



