454 Bibliography. 
erica 
range of surface covered by the phenomena, and the nature of the 
transported material. The author after speaking of the distribution 
over Europe, exhibits his own views as follows :——‘‘ But it is of more 
importance to remark, that whatever be the nature of the blocks, they 
conceive water alone to be capable of giving these characters to the 
perfectly angular, and not unfrequently imdedded in masses of fine 
drift, indicative of the absence, at the time of its deposition, of any 
lence is indebted to Dr. Warren for a most munificent and unique 
contribution to her records. If Dr. Warren had not already 
lamous as the great surgeon, he would certainly become so as the au- 
thor of the greatest book on the greatest quadruped. 
