150 Steam Engines.— Geological Curiosities at Boughton Hill. 
above the level of the sea at half tide, and from thence to the 
top of the precipice 44 feet. 
“© In Port Noffer,east of the Giants’ Causeway, there were two 
pits; the westernmost 199 feet from the level of the sea—and 
from the pit to the top 70 feet. The distance from the first: 
altitude taken at Port Ganneye to that in Port Noffer, is 80 
ete 
he people who found the coal, with difficulty and in some 
places great danger, threw off the pillars to get at it, and could 
not pursue it further than cleared, as they had no method of 
supporting the vast mass above it. 
«© The stratum of coal dips into the land in a southerly direc- 
tion; and from the altitudes taken it appears that it lowers as it 
approaches to the eust: 
“ Several trials at different places have been made to find coal, 
but none worth following, except under columnar basalt, above 
which is a stratum of irregular whin-stone, then basalt pillars at 
the top. The depth of the good seams of coal is from three to 
five feet ; the upper ‘coal, on which the pillars rest, is a soft 
mossy coal; the wooden coal is :in-the centre, and the best and 
more solid at the bottom of the pit. The blocks of wooden coal 
lie nearly horizontal, in an east and west direction across the 
face of the promontory. One of those blocks is so large in the 
east pit, Port Ganneye, that four men with two crow-irons could 
not turn it out. 
6° The land, ‘Soe the Jom to the southward falls consi- 
derably.” ‘ 
STEAM ENGINES {£N CORNWALL. 
The following were the respective quantities of water lifted 
one foot high with ane bushel of coals by twenty-nine engines, 
reported by Messrs. Leans’, in the month of July. 
Load per square 
Pounds of water.| uch in cylinder, 
21 common engines averaged 21,077,581 various. 
Woolf’s at Wheal Vor .. 36,345,637 15:4 lib. 
Ditto Wh. Abraham .. ° 44,987,270 15+] 
Ditto ditto 9. os? 925,258,888 3°7 
Ditto Wh. Unity es ~~ 82,590,596 13°1 
Daleouth engine oe 13 02 $,638 li-2 
Wheal Abraham ditto i 35,089,486 10°3 
United mines ditto .. -- 382,094,036 179 
Wheal Chance ditto ee _ 3/,889,/98 13-0 
GEOLOGICAL CURIOSITIES AT BOUGHTON HILL. 
The workmen employed in cutting through Boughton Hill, 
Kent, 
