23 
of Edinburgh, Session 1866-67. 
Formation and its Fossils, and a description of the Coal Fields 
of North America and Great Britain.” This great work, which was 
printed and published in Edinburgh, appeared in 1858, and is 
illustrated with an immense number of maps, geological sections, 
sketches of scenery, and fossils, executed by Messrs W. and A. K. 
Johnston.* 
It was during the progress of this great survey that Professor 
Rogers and his brother already mentioned, who was in charge of the 
survey of the state of Virginia produced their remarkable Memoir 
“ On the Physical structure of the Appalachian Chain, as exempli- 
fying the laws which have regulated the Elevation of Mountain 
Chains, &c.” This Memoir excited a deep interest when read at 
the meeting of the association of geologists and naturalists which 
was held at Boston in 1842, and it has been published in its memoirs 
for that year. Professor Rogers was one of the founders of the 
association which was expanded into the Association for the Ad- 
vancement of Science. 
After having given to the world the results of his geological 
researches, he took up his residence at Boston, devoting himself to 
his favourite studies, and occasionally delivering courses of lectures 
in the Lowell Institute, which he did with a readiness and felicity 
of diction rarely exhibited by the cultivators of physical science. 
While in Edinburgh, engaged in the publication of his great work, 
a vacancy took place in the Regius Professorship of Natural History 
in the University of Glasgow, and through the influence, we believe, 
of the Duke of Argyll, he was appointed to that chair in 1857. The 
lectures which he delivered in this new position were greatly 
admired, and he might have looked forward to many years of rest 
from the toils of his early life ; but in the severe exposures which he 
endured in his geological surveys, his constitution was so enfeebled, 
and in the composition and superintendence of his great work he 
had so overworked his mind, that his colleagues observed for two 
or three years a gradual failure of health, which terminated fatally 
at Glasgow on the 29th of May 1866, in the 58th year of his age. 
Alan Stevenson, an eminent engineer, was born in Edinburgh, 
* About the same time Professor Rogers published an elaborate paper “ On 
the Origin of the Appalachian Coal Strata, Bituminous and Anthracite.” 
