APPENDIX. - 23Gc 



THE LATE SIR WILLIAM E. LOGAN. 



WHEN writing the dedication of this work, I little thought 

 that the eminent geologist and valued friend to whom it gave 

 me so much pleasure to tender this tribute of respect, would 

 have passed away before its publication. But so it is, and we 

 have now to mourn, not only Lyell, who so frankly accepted the 

 evidence in favour of Eozoon, but Logan, who so boldly from 

 the first maintained its true nature as a fossil. This boldness 

 on his part is the more remarkable and impressive, from the 

 extreme caution by which he was characterized, and which 

 induced him to take the most scrupulous pains to verify every 

 new fact before committing himself to it. Though Sir 

 William's early work in the Welsh coal-fields, his organization 

 and management of the Survey of Canada, and his reducing to 

 order for the first time all the widely extended Palaeozoic 

 formations of that great country, must always constitute 

 leading elements in his reputation, I think that in nothing 

 does he deserve greater credit than in the skill and genius 

 with which he attacked the difficult problem of the Laurentiaii 

 rocks, unravelled their intricacies, and ascertained their true 

 nature as sediments, and the leading facts of their arrange- 

 ment and distribution. The discovery of Eozoon was one of 

 the results of this great work ; and it was the firm conviction 

 to which Sir William had attained of the sedimentary cha- 

 racter of the rocks, which rendered his mind open to the 

 evidence of these contained fossils, and induced him even to 

 expect the discovery of them. 



This would not be the proper place to dwell on the general 

 character and work of Sir William Logan, but I cannot close 

 without referring to his untiring industry, his enthusiasm in 

 the investigation of nature, his cheerful and single-hearted 

 disposition, his earnest public spirit and patriotism qualities 

 which won for him the regard even of those who could little 

 appreciate the details of his work, and which did much to 

 enable him to attain to the success which he achieved. 



