Notices respecting Diluvial Deposits. WW 
Arr. IUl.—Notices respecting Diluvial Deposits in the 
State of New-York and elsewhere ; in a letter to the Ed- 
itor from Prof. AMos EATON. s 
Troy, (N. Y.) Nov. 23, 1826. 
DEAR SiR, ; 
I pULY received your package and the letter from Prof. 
Buckland to you of March 1, and yours of Sept. 27, and of 
the 18th inst. te myself. iI have concluded that I cannot 
have the second part of the Hon. Stephen Van Rensselaer’s 
Canal Survey in readiness sooner than March or April. it 
is a positive order of Mr. V. R. that the second part shall be 
condensed like the first, embracing a mere statement of 
facts, of but few pages. My manuscripts would fill three or 
four common -octavo volumes. These I must cut down to 
half of one volume. As you are desirous to furnish Prof. 
Buckland with facts connected with the subject of his Re- 
liquise Diluvianze, before he publishes the second volume, I will 
transcribe and condense some of the most important facts of 
that kind. I must be so very brief as to be scarcely intelli- 
gible. In the printed report I shall enumerate localities and 
give a connected train to the whole. 
1. The district ecamined for the purpose of opposing or con- 
firming the opinions of Buckland and Conybeare in regard to 
the alluvial formations contains an east and west parallelogram, 
four hundred and eighty miles long, and about twenty wide. 
This commences about twenty miles east of Connecticut river, 
and extends a considerable distance along the south shore 
Lake Erie. There is also a north and south parallelogram, 
two handred and eighty miles long, and about ten wide 
throughout the whole extent, and about forty miles wide in 
the northern half. This commences above Crown Point, on 
e Champlain, and extends down the Hudson river to its 
mouth. In addition to this, I have examined most of the 
country among the western spurs of the Catskill mountains. 
2. Plastic clay. I have found numerous small beds, em- 
braced in the marly clay, (London clay,) but have not 
been able to diseover it as a stratum. I do not believe any | 
thing analagous to that stratum in Europe exists in this 
district. 
3. Marly clay. [This is the London clay of Conybeare. 
But Mr. Pierce first published it ander this name.] 1 found 
VOL. XII.—No. 1. 3 
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