X PREFACE TO THE FIRST EDITION. 



treal, who kindly permitted the use of several of the illus- 

 trations of his ' Acadian Geology.' A considerable proportion 

 of the engravings, however, are taken from D'Orbigny's beau- 

 tifully illustrated ' Cours Elementaire de Paleontologie/ by 

 an arrangement with the publishers of that work. 



UNIVERSITY COLLEGE, TORONTO, 

 October 16, 1872. 



