134 HAMILTON ASSOCIATION. 



and were beginning to be looked to more and more as the means of 

 existence. 



By the introduction of metals, a new era of commerce and conse- 

 quently of civilization was commenced, and many interesting proofs 

 of commercial advance could be given, but into these evidences we 

 have not, for the present, time to look. They must therefore be left 

 to the future, when probably we may be able to trace the course of 

 commerce and follow her footsteps down to the time when written 

 history steps in and assists us in our work of research. As it is, in 

 the stone period we have seen men showing a spirit of trade. We 

 have judged them by their own acts and have read their history, so 

 far as we have gone, by their works and by their deeds ye shall know 

 them. 



LIST OF AUTHORITIES. 



" History of the American Indians," Schoolcraft 



" Man Before Metals," . . M. Joly 



''Anthropological Subjects," , C. Rau 



" Ancient Man in Europe," C. Rau 



" Smithsonian Contributions to Knowledge," 



" British Lion," "Contemporary Review," Professor Boyd Dawkins 



" Cruise of the Challenger," W. W. Spry, R. N. 



" Prehistoric Man," Dr. Wilson 



" Prehistoric Annals of Scotland," Dr. Wilson 



" Manual of Mineralogy," J. D. Dana 



" Dawn of History," C. F. Keary 



" British Association Report," Fifty-fourth (Montreal) Meeting, 1884, 

 " Fossil Man," Professor Dawson 



