oming a candidate.

In the latter part of 1825, Professor Dana published "An Epitome of
Chemical Philosophy," designed as a text-book for his own classes, but
which was afterwards adopted as such in two other institutions. In
1826, he was appointed one of the visitors of West Point Military
Academy, and soon after his return was chosen to the chair of
Chemistry, in the College of Physicians and Surgeons in the University
of New York, to which city he then removed. He was elected member of
the Linnaean Society of New York, and accepted an invitation to deliver
a course of lectures before the Athenaeeum.

During his residence at Hanover, Professor Dana had been much
interested in Electro-magnetism, then a new science, and in preparing
apparatus for exhibiting its wonders, freely stating his conviction
that it would produce more astonishing results than any power
previously known. When surprise was expressed at his selecting for his
Athenaeeum lectures this subject, so little known even in Europe, and
in which so few in this country would feel any interest, Dr. Dana
replied that he had chosen it for those reasons; that he thought it
time for public attention to be directed to it, as he was certain it
would lead to most valuable results, and that he should endeavor to
render it popular. How far he succeeded, the delighted audiences that
crowded to hear him bore evidence. Of the truth of his prediction as
to the results to be wrought out by the science, the marvels of the
electro-magnetic telegraph bear witness to the world.

Samuel F. B. Morse was then following his profession as a painter in
New York, and lectured upon art before the Athenaeeum. An intimacy
sprang up between him and Dr. Dana, whose lectures he attended, and
whom he used to visit in his laboratory, thus becoming familiar with
his views on scientific subjects. Morse's published statements as to
the origin of his knowledge of electro-magnetism are as follows:

"I learned from Professor Dana, in 1827, the rationale of the
electro-magnet, which' latter was exhibited in action. I witnessed the
effects of the conjunctive wires in the different forms described in
his lectures, and exhibited to his audience. The electro-magnet was
put in action by an intensity battery; it was made to sustain the
weight of its armature, when the conjunctive wire was connected with
the poles of the battery or the circuit was closed; and it was made to
'drop its load' upon opening