30 
LACCOUTHIC MOUNTAINS 
The restored profile of Mount Marcellina, of the West Elk Range, 
modified after Cross displays the same essential characteristics 
(figure 3). 
Even the Henry Mountains now seem to come under the cate¬ 
gory of the asymmetrical type rather than the one originally 
Fig. 2. Cross-section of Typical Taccolith. 
formulated for them. The diagrammatic cross-section of Mount 
Hillers is plainly asymmetric rather than regular, as Gilbert’s 
theoretical ideal calls for, indicating that perhaps the actual sym¬ 
metry is not so perfect as is argued, and that the impressions 
gained from original observations subconsciously did not coincide 
entirely with the assumed demands. There are besides many 
observations recorded in the Henry Mountains monograph of 
which no use is made beyond mere mention of the facts. Others 
there are which require additional interpretation. Still others 
indicate that had they been interpreted less hurriedly there might 
have resulted a very much modified generalized ideal. 
The type-form of the laccolith is, therefore, to be regarded as 
a cuneiform, or wedge-shaped, body which is a direct expression 
of its genesis. 
