quire a low temperature, may be performed.

And in the second volume there is a frontispiece representing a
portable universal furnace, made of strong wrought iron plates and
lined with bricks bedded in fire-proof loam. The height of the furnace
is two feet. The body of the furnace is elliptical. There are three
openings in front of the furnace, one above the other, furnished with
sliding doors, and fitted with stoppers made of crucible ware.

Both pieces of apparatus represent a marked advancement. They were
evidently exceedingly useful. By their means it was possible to
execute excellent work.

It would repay one to examine with care the various American
text-books on chemistry, beginning about 1770 and continuing down to
1830. There would arise a picture before one's mind of the successive
steps in the development of chemical apparatus, and again, the
knowledge derived from the presentation of chemical theory and data
would be refreshing and inspirational. It is to be hoped that the time
is not far distant when some library, public or university library,
will go to the trouble of gathering the American texts on Chemistry
for the period just alluded to. It is not likely that an alcove
filled with this literature would be largely patronized, yet it would
be possible for the enthusiast on the development of chemistry in this
country to collect from such a source a great deal of valuable
material which might be presented with profit to the rising generation
of American chemists.

Cutbush had little leisure during the year 1813, as he was engaged
with the duties of the College and was conducting popular lectures on
an extended scale. It was necessary for him to invite his friend, Dr.
George F. Lehman, to assist in the various demonstrations. They
emphasized not only the theory but the practice of chemistry with its
application to the useful arts. Their experiments were numerous and
were of such a character as to appeal to the general public. The
course offered by Professor Cutbush and Dr. Lehman was remunerative.
It is said the cost of tickets for ladies was $5.00 and those for
gentlemen $8.00.

In addition to the devotion of Cutbush to these didactic courses in
chemistry, he spent much time in a literary way. One of the best-known
publishers of the city announced the purpose of printing the _American
Artist's Manual_ under the editorship of Cutbush. The advertisement
stated--

"To manufacturers, however, who