78 PRIMEVAL MAN. 



Mankind. According as we may have made 

 one or other of these great branches of inquiry 

 our favourite pursuit, we may be disposed 

 to place a different estimate on their com- 

 parative value. But perhaps we shall not go 

 far wrong if we arrange them in the order 

 here given, as the order in which they stand 

 relatively to the directness and certainty of 

 the testimony they afford. 



One distinction, however, it is important 

 to bear in mind. Chronology is of two kinds, 

 — first. Time measurable by years, — and 

 secondly. Time measurable only by an 

 ascertained order or succession of events. 

 The one may be called Time-absolute, the 

 other Time-relative. Now, among all the 

 sciences which afford us evidence on the 



