180 



THE FORMS OF WATER IN 



that here, and not on the neve, the veined structure 

 was manufactured. 



SECTION OF ICEFALL, AND GLACIER BELOW IT, SHOWING ORIGIN OF VEINED 

 STRUCTURE. 



458. This, however, is, at bottom, the language of 

 strong opinion merely, not that of demonstration ; and in 

 science opinion ought to content us only so long as 

 positive proof is unattainable. The love of repose must 

 not prevent us from seeking this proof. There is no 

 sterner conscience than the scientific conscience, and 

 it demands, in every possible case, the substitution for 

 private conviction of demonstration which shall be con- 

 clusive to all. 



459. Let us, for example, be shown a case in which, 

 the stratification of the neve is prolonged into the 

 glacier ; let us see the planes of bedding and the planes 

 of lamination existing side by side, and still indubitably 



