Gerard Troost— Glenn. 87 
several places, as at Hinlopen in Overton and also Fentress counties 
where the coal formation seems to have its greater extent, run- 
ning easterly through Campbell, Morgan and perhaps Anderson 
counties as far as the eastern declivity of the Cumberland moun- 
tains, wliere again it crops out at several places. In fact wherever 
the sandstone forms the upper stratum in these counties coal may 
be found by boring. 
"This excursion has convinced me still more of the mineral 
richness of the eastern part of our state. In Clayborne county be- 
tween Clinch and Powell's rivers is a vein of zinc and lead ores. 
The finest marbles abound everywhere. Carter and Washington 
counties are rich in metallic deposits and several iron works are 
in operation. 
"In a former excursion I ascertained the general geological 
features of the western part of this state. As the autumn is bet- 
ter calculated to travel through this part, I shall examine some 
parts of it more minutely during the months of October and 
November of this year and again take the spring; for east and mid- 
dle Tennessee. 
"Although I have collected a large number of geological facts 
relating to the different parts which I have visited, I am never- 
theless not yet ready to report. It requires in order to do this a 
more minute examination than I have been able to bestow upon it, 
and this will form the subject of a subsequent report. 
"If the subjoined descriptions be considered by your honorable 
body worthy of publication, I shall wish to have the manage- 
ment of it myself, as it will be necessary to have the map en- 
graved and the proofs properly corrected— besides several addi- 
tions are yet to be made, before it is fit to appear before the public. 
As I have mentioned above, notes on the nature of the soil are 
wanting, some of these analysis are still to be performed and I 
may yet be able to add a few more descriptions of our fossils or 
some other natural production of our state." 
The third report describes the extent of the coal fields 
in the state, discusses the marl now known as the rotten 
limestone, and the soils of the state and concludes with a 
brief notice of iron furnaces and iron ores. There is sub- 
joined from the unpublished second report the result of the 
investigations of the soils of Davidson. Williamson and 
Maury counties. 
The fourth report opens with an exposition of the 
principles of geology and a brief description of the rocks 
characteristic of each of the divisions from primordial to 
Tertiary. The report proper describes the Ocoee district 
