TO 



PROFESSOR RICHARD OWEN. 



SIR, I begged to be allowed to dedicate to you the first 

 edition of this essay, in remembrance of the kind hospitality I 

 formerly received from you in the cottage at Mortlake, and 

 of our long conversations, in which you were so ready with 

 good advice. 



The debt of hospitality can never be repaid. I am happy to 

 be able once more to express my gratitude to you, and my 

 admiration of your great works. 



GEORGES POUCHET. 



Museum de Rouen , July 1st, 1864. 



