[[underline]] 1 892 [[/underline]] ; 
[[underline]] November 20 - continued, [[/underline]] J. 
the lower part is mostly covered with [[latus?]] but a few masses of 
disturbed Potomac sand partially lithified are still visible. At the very top I 
of that formation on the extreme left under the roots of a tree about , 
ready to fall is a pocket of white clay that breaks into square blocks. [[I?]] i 
detached some of it & found a few plants. I believe it is Chesapeake and i < 
that the plants are redeposited in it. [Wrong] 
Below this is a ravine and then occur the highest bluffs along this shore. | 
They have a maximum height of nearly or quite 1 00 feet and extend for \ 
a distance of a quarter of a mile. On the opposite page I give the section i 
as measured by my eyes on the spot. This is difficult, as the bluffs are 
not close to the river but come 45 yards back, the interval being £ 
occupied by slough and overgrown with trees & shrubs. 
[[end page]] 
[[start page]] 
Section of bluff below White 
House Landing: 
3. Columbia, mostly gravel and 
cobble or boulder clay 30 feet 
2. Tertiary, certainly Chesapeake 
above in the form of white or 
brown stratified sands and clays, 
and probably [[Pammikey?]] below 
in the form of rather light colored 
green sand and green clay. 40 " 
1. Potomac coarse white or 
gray sands. The lower 6 feet 
inferred from safe indications 30 " 
This Potomac sand is in some place brightly white and kaolinic, and 
toward the southern end of the bluffs its lower portion where cracked 
away in large block has become considerably lithified and closely 
resembles 
Local field note-book of Lester Ward 
Transcribed and Reviewed by Digital Volunteers 
Extracted Oct-11-2015 07:35:03 
Smithsonian Institution Transcription Center, Smithsonian Institution Archives 
