THE YOUNG PROFESSOR 183 
The College opened in September. The Grammar 
School was now definitely separated from it. Baird’s 
duties included Chemistry, Natural Philosophy and 
Zoology, twice a week each, before breakfast, for the 
seniors; the juniors had four lectures a week in the after- 
noon; a total of ten hours teaching weekly. 
On the 22nd of September he went to the meeting 
in Philadelphia of the American Association of Geologists 
and Naturalists; a precursor of the Association for the 
Advancement of Science. Here he met many old friends 
and had long conferences with Agassiz, who was over- 
flowing with projects for the elucidation of the American 
fauna and flora. At midnight of the 24th he left for 
Carlisle accompanied by John LeConte. 
A few days later he had a visit from Professor Arnold 
Guyot, who was studying the physical geography of the 
Alleghenies. 
Agassiz contemplated a monograph of American 
fishes, and wished for Baird’s cooperation, which was 
cordially given, and many fishes of Baird’s collecting 
were sent him. But this was too great an undertaking 
in addition to Agassiz’s other projects, and after some 
years of delays and interruptions, the plan was allowed 
to drop by mutual consent. 
From George P. Marsh to Spencer F. Baird. 
Buruincton, Oct. 10, 1848. 
Dear Barrp,— 
If Bartlett and Welford of New York, or more especially the Rev. 
R. W. Griswold; late of Phila., but now, as I believe, of New York, 
can’t tell you where to find the Periodicals you want, no man can. 
I presume they are in the Library of Congress, and they must also 
be to be found in the Boston Atheneum and the public libraries in 
