p. 98

[pencil sketch: 98]

-98- 1829

Shippingsport, Ky. Feb. 11th, 1829.

Dear Brother, --

I send you a figure of our bridge as now adopted
on a scale of 40ft. to an inch.******(Sketch.)[pencil sketch - No 12]

Your affectionate brother,
D. Lapham. Increase.

Shippingsport Ky. Feb. 11th, 1829.

Dear Sir,--

I have delayed writing until this period [pencil sketch - hoping] that I
might have something interesting to relate in regard to the geology
of the western country on my return from Chillecothe, Ohio. But ow-
ing to the haste with which I was obliged to travel my observations
were very limited and I only discovered that the lime rock (which
I think must be the Lias of Prof. Eaton), after rising from under the
sandstone and slate (3rd Graywacke of Eaton) at this place continues
to be the only rock found in situ until we arrive within ten miles
of Chillecothe, where it again passes under the sandstone.

I took with me a keg of minerals and petrifactions, which
were collected on and about the Ohio Falls and exhibited them
to Mr. Dorfeuille, proprietor of the Western Museum. Among these were
species of Madepora, Milipora, Tubipora, Terrebiatula, Trilobus
and Productus.

On hearing his opinion I was induced to throw away spec-
imens which before I had supposed to be valuable; and to be much
vexed at myself to think that I had sent you some that were quite
as bad. I have to plead for excuse my almost total want of expe-
rience in collecting such specimens and it is probable that you
may find a few among them worth saving.

You will not therefore consider it a very great loss if
they have not come to hand.****** I have been engaged to collect