334 E. Hitchcock on the Coal of Bristol Co., and R. Island. 
in width from two to twenty feet. They have followed down 
the middle bed to the depth of six hundred and twenty feet, from 
which six gangways have been extended, from eighty to eight 
hundred and forty-four feet each. During the last half of 1851, 
thirty-one hundred tons of coal were taken out, and an opening 
is now made into a subjacent bed. The appearance of the opera- 
tions at this mine, under the superintendence of Arad Gilbert, 
Eisq., and the quality of the coal, appeared to me more satisfactory 
and promising than at any other mine in this coal fie 
e mouth of this mine is not more than twenty feet above 
the ocean, and only a few rods —, ; yet, after descending about 
one-third of the distance, to the bottom of the inclined shaft, I 
found the mine quite dry, sihounis at the bottom, I was some 
hundreds of feet below the waters. The coal appeared to me less 
erushed at this mine than at most others ; yet the bed is very un- 
equal in width; showing that the folding agency has here 
operated. 
The opening of this mine is several ot feet lower than 
that of the Case mine. ‘The latter, however, I have understood 
to be subject to the influx of water, but L Siiaris learn how deep 
it was ever wrought. 1 consider the eager whether these two 
mines are opened on the same bed, as yet quite unsettled. Both 
of them lie near to protruding mines of granite, and have been 
subject to a good deal of disturbance. 
. In Newport, R. Island.—In the southeast part of this 
town a thin bed of coal shows itself on the coast, where the dark 
strata of slate stand nearly perpendicular, and have a direction 
nearly east and west. During the revolutionary war, the British 
pete some excavations . this spot, in the hope of finding fuel. 
uit the prospect is very poor, especially as the spot is so near 
rosea which has affected the strata. Yet at this place the shale 
abounds in coal plants. 
et me now present, in a tabular form, the leading facts re- 
specting these — localities, where coal has been discovered in 
this field; at least those cases where the facts are definite 
enough to tabulate. 
Locality. a ee 7a weed 
| SS Tee: nickness of do. | Strike of do. eo 
Mansfield, Centre, . 1 |A few inches, be. E, and s, w., ny. w., large. 
# Hardon, 7 \10 feet, N. BE. and s.-w., 53° w. w. 
New, . {18 (7 feetmax, \y.z. ands. w., 30° bs 70° x. W- 
Wrentham, Bisa! 1 ee g. and W., 45° 
Rayn 1 [8 feet, N. 50° £, ve = z 
Geet slant 2 (15 to 23 feet, wwe dsw. dn. & 8.4 
Valley Falls, 5 (6 to9 feet, (v.50° to 60° zg, ms : 45° 
| Providence, . 1 10 feet, < w. and s. £., 45° 
Bristol, 1 j= = janet Ae vo ee 
» Pertsmo ortsmouth, Case’s, 3 (13 feet max,, x. and aweh 9 
__.“  Aquidneck, | 3 |2 to 20 feet, |x.a few crite eet a 
