James Hall, LL. D. — Hovey. 143 
species of ancient fauna and flora from all parts of the world. 
How admirably was such a man fitted to make the address that 
he did as president of the American Association for the Ad- 
vancement of Science, on the "Geological History of the 
American Continent;" originally given at Montreal, and after- 
ward substantially repeated at Albany and in New York city. 
Soon after Sir William Logan began the survey of Canada, 
in 1843, he opened communication with Dr. Hall and his as- 
sociates, and from the first based the investigations of British 
America on the "well-founded classification of the rocks of 
the state of New York'," and "practically without change of 
plan or nomenclature." In 1854 Hall examined the Graptolites 
of the Quebec group, and in 1855 the Devonian rocks of 
Ontario. For reasons already intimated he was at this time 
on the point of devoting himself wholly to the Canadian 
survey, as he was urged to do by a special committee of the 
Legislative Assembly. At this crisis, and at the suggestion of 
the secretary of state, Hon. Elias Leavenworth, a conference 
was held, attended by Prof. J. D. Dana, Prof. Louis Agassiz, 
and others. Sir William Logan being present, and also Mr. 
rUatchford, chairman of the Assembly committee of ways and 
means. The result was an agreement confirmed by the New 
York Legislature, that enabled Dr. Hall to prolong his work 
according to his original plan for the remainder of his life. Yet 
lie always retained his interest in Canada, and freely put at the 
disposal of Sir William Logan materials that, as Logan himself 
says, made Hall responsible for half the completed geological 
map of Canada. When a biographical notice of the great 
American geologist was desired for Appleton's Cyclopaedia, 
in 1874, it is noteworthy that the task was put in the hands of 
Dr. T. Sterry Hunt, of Montreal, and that at Hall's sixtieth 
anniversary of public service one of the most glowing tributes 
to his success came from Dr. George M. Dawson, director of 
the geological survey of Canada. Only a man of intense 
activity, energy and devotion to science regardless of territorial 
limitations, could have thus won the gratitude of the whole 
bemisphcre. 
Many of our most distinguished men of science have testi- 
fied that they had their first impulses in the direction of geolog- 
ical in\estigation from him who has been so fitlv stvled "the 
