562 PREHISTORIC EUROPE. 



our knowledge increases may be confidently expected. Nor is it 

 a too sanguine hope that the time will yet come when geologists 

 shall attempt to measure off the aeons of the past, and assign to 

 each formation its approximate antiquity. Guided by the 

 astronomer and the physicist, they may yet penetrate mysteries 

 which at present appear inscrutable, and be enabled to follow 

 with a clearer and steadier gaze the working of the Divine 

 Creator in ages so remote that, compared with them, the Glacial 

 Period of which I have been speaking seems of no earlier date 

 than yesterday. 



p. 665) ; M. Arcelin (Les formations tertiaires et quaternaires des environs de 

 Macon, Ann. de V Acad, de Macon, 1877) ; and M. A. Falsan {Note sur Vorigine 

 de Vargile a silex des environs de Macon et de Chalon, 1878). For further notices 

 of Tertiary erratic or boulder formations, see Stuart Menteath, Bull. Soc. G6ol. 

 France, 2 e Ser. t. xxv. p. 695 ; Collomb, Ibid., t. xxvii. p. 559 ; Tardy, Ibid., 

 t. xxix. pp. 541, 547 ; 3 e Ser. t. iv. p. 184 ; Roujou, Congres intern. d'Antkrop. et 

 d'Arclieol. Preh. (1871) p. 86 ; R. v. Drasche, Jahrb. der Tc.-Tc. geol. Reichsanst., 

 Bd. xxix. p. 112 ; Mantovini, Boll. Com. Geol. Italia, 1878, p. 443. 



