566 
island did not resume a permanently quiescent state till the 26th of 
June. The number of houses thrown down is estimated to be 800, 
but several others must. be rebuilt, and-of the remainder the greater 
number require extensive repairs. 
During the whole of these earthquakes the motion was greatest at 
Praya, diminishing in force to the westward, and every convulsion 
was preceded by a loud subterranean or submarine noise to the east- 
ward of Terceira, which so exactly varied in intensity with the force 
of the succeeding shocks, that the noise became not only the harbinger 
but the measure of the severity of the earthquake Arent an English 
mile in length was formed in the ground, extending from the shore 
to the westward. j 53%) Bg 
The less severe shocks were not felt beyond Terceira: others were 
experienced, of apparently equal force, at St. George’s, about fifty 
miles to the south-west, and at Graciosa, about the same distance to 
the north-west of Praya; but only the earthquake which destroyed 
that town was felt, though not powerfully, at the capitals of Pico, 
sixty-eight miles south-west, and of St. Michael’s, the same distance 
to the south-east. At Fayal, eighty-five miles west by south, and at 
the eastern end of St. Michael’s, 105 miles south-east by east, ne mo- 
tion was perceived, as far as Mr. Consul] Hunt had been able to aseer- 
tain. If the shocks felt about 30 minutes past 3 o'clock on the 
morning of the 15th of June, in the several islands, be divided into 
four degrees of intensity, each interval, the author says, will be 
found to contain a distance of about seventeen miles, the eastern 
end of Terceira being on the first degree, or seventeen miles from 
the centre of eruption; the western end thirty-four miles; Graciosa 
and St. George’s fifty-one, and the capitals of Pico and St. Michael's 
sixty-eight miles. The latter places, equally distant from the centre 
of eruption, experienced shocks ef equal degrees of diminished 
force, . Bae 
Mr. Consul Hunt then alludes to Buffon’s notice of submarine ex- 
plosions between St. Michael’s and Terceira, attended by earthquakes 
in those islands, and the appearance of newly formed islets; also to 
the throwing up of Sabrina, near St. Michael’s, in 1811, the effeets 
of which were powerfully felt in that island, but not in Tereeira, 
fifty miles distant; and, on account of these phenomena, he, in 
conclusion, advises mariners to keep a sharp look-out for shoal water 
on approaching Terceira from the eastward. 
A paper, entitled “‘ Some Geological Remarks made in a Journey 
from Delhi, through the Himalaya Mountains, to the frontier of 
Little Tlibet, during 1837,’ by the Rev. Robert Everest, F.G.S., 
was then read. 
The author's route, after quitting Delhi, lay through Seharun- 
pore, the Keeree pass in the Sevalik hills, and Mussoori to the Jumna,, 
thence nearly north-west to the valley of the Paber, as far as Roo- 
roo, where it quitted the course of that river and crossed the moun- 
tain range to Rampore. It then ascended the valley of the Sutluj 
to the Leo River, and terminated near the Khealkhur Fort, on the 
