ts and missioners in the
extension of those subjects. As early as 1808 M. Godon gave lectures
on Mineralogy, and in 1810 announced a work of two volumes with a
quarto supplement of charts. The science of chemistry also had its
advocates. Cutbush was evidently one of them, although not the first.
This honor belongs to Dr. Patrick Kerr Rogers, father of William B.
Rogers, founder and first president of Massachusetts Institute of
Technology and President of the National Academy of Science, of Dr.
Henry D. Rogers, the eminent geologist, and of James B. and Robert
E.--both distinguished in the chemical field.

It was in 1802 that Patrick K. Rogers received his medical degree and
embarked upon practice. Having spare time, he began public lectures on
the sciences, confining himself from 1807 to chemistry. He was very
successful. One of his advertisements as it appeared in the _Aurora_,
in 1809, read:

"EVENING LECTURES
MEDICAL AND CHEMICAL
For Gentlemen

DR. P. K. ROGERS

"Having commenced a course of experimental lectures on
Chemistry to ladies, proposes to give a similar course to
gentlemen at a different hour. Twelve o'clock is the hour
fixed for the former, but as the gentlemen of the city are
variously engaged in business during the day, an evening hour
will be more convenient for them. The evening course is
particularly intended to accommodate men who have a taste for
scientific information and who cannot, on account of their
respective engagements during the day, attend the lectures
in the University.

"A course for gentlemen will commence on Tuesday and will
terminate in the last week of February. The hour will be
seven o'clock in the evening. Two lectures at least,
sometimes three, will be delivered every week. About 1500
interesting experiments will be exhibited and submitted to
the familiar inspection of the class. Several important
experiments not hitherto introduced in any series of chemical
demonstrations in this place will be displayed in the
illustrations of different subjects.

"The laboratory is in the lecturer's house in South Ninth
Street, opposite the University and is furnished with an
excellent chemical apparatus.

"The tickets for this course will be ten dollars. The persons
to take tickets will be entitled to the use of the
lecturer's excellent medical and chemical library du