64 The American Geologist. January, 1892 
Creek) clays. The formation will be further considered and reported 
upon hereafter. 
Another place visited by the party mentioned above, was the noted 
La Grange locality in Fayette county, Tennessee. Those of the party 
visiting this point, in addition to the gentlemen already referred to, 
were Messrs. McGee, Ward, Hill and Holmes. All were much interested 
in the great display presented here. La Grange is located on the edge 
of a high table-land. Immediately to the south of the town, this table- 
land breaks away in a steep, bold escarpment down to the bottom-lands 
of Wolf river. The washes along the old roads leading from the town 
down the escarpment have displayed in grand sections the strata of the 
region. 
The Lafayette (Orange Sand) formation makes up by far most of the 
slopes. At the base of the slopes, come in a group of laminated sands 
and clays, with shelly, siliceous shales and sandstones containing leaves, 
which it was agreed pertain to the La Grange formation. At the top of 
the slopes and sections, making the floor of the table-land and resting 
upon the Lafayette, is the “Yellow loam,” a division of Mr. McGee’s 
‘Columbian formation. 
T add that the La Grange formation, which is so low in the sections at 
La Grange, rises, at points in Fayette and adjacent counties, to much 
higher levels, even appearing and outcropping, now and then, at the 
surface of the table-lands. The La Grange had an uneven, more or less 
eroded, surface upon which the sands of the Lafayette were deposited. 
James M. Sarrorp. 
* Vanderbilt University, Nashville, Tenn. 
BIBLIOGRAPHY UNDERTAKEN BY THE INTERNATIONAL CONGRESS OF 
GroLoGists.—Mr. G. IK. Gilbert communicates to the GEOLOGIST the 
following letter from Mr. Em. de Margerie, Secretary of the Interna- 
tional Committee on the Bibliography of Geology. It sets forth the 
organization and plans of the Committee. Geologists residing in North 
America who have prepared or are preparing bibliographies of any por- 
tion of the literature of geology, are requested to communicate with Mr. 
Gilbert (address: G. K. Gilbert, U. S. Geological. Survey, Washing- 
ton, D. C.) 
INTERNATIONAL CONGRESS OF GEOLOGISTS: COMMITTEE ON THE BIBLIO- 
GRAPHY OF GEOLOGY. 
Paris, Rue de Grenelle 132, Nov. 20, 1891. 
Sir: Atthe meeting of Tuesday, September 1, 1891, the International 
Congress of Geologists, assembled at Washington, on motion of Messrs. 
Hf. 5. Williams and de Margerie, appointed a permanent international 
committee charged with the duty of centralizing the information relat- 
ing to geologic bibliography. This committee, which is authorized to 
add to itself new members in unlimited numbers, comprises at present 
Messrs. Frech (Germany), Gilbert (North America), Golliez (Switzer- 
eS 
