92 Account of the recent discoveries respecting 
Disappointed in this pursuit, Mr Caviglia applied his endea- 
vours to clear the principal entrance of the pyramid H, which 
had from time immemorial been so much obstructed as to ren- 
der it necessary for those who entered the passage, to creep on 
their hands and knees : By this means he hoped to admit a 
freer passage for the air into the interior. In the course of 
these labours he made the unexpected discovery, that the main 
passage leading from the entrance did not terminate at I, as 
hitherto supposed, but that it continued downwards, with the 
same degree of inclination, the same dimensions, and the same 
finish of work at the sides, as at the beginning of the channel. 
Having cleared out this inclined passage IK to the length of 150 
feet, the air became so impure, and the heat so suffocating, that 
he experienced the same difficulties in prevailing with the Arabs 
to continue the work, and was himself attacked with spitting of 
blood, and other symptoms of impaired health. Still, how- 
ever, persevering in his researches till he had excavated the 
passage to a distance of 200 feet, his labours were reward- 
ed with the discovery of a door-w^ay L, on the right side, 
from which a smell of sulphur was soon perceived to issue. 
Recollecting, that, in his first visit to the pyramid, he had 
burned some sulphur at the bottom of the Well, for the pur- 
pose of purifying the air, he conceived the probability of there 
being a communication by this door-w^ay with the Well. This 
conjecture was soon realized by the discovery that the chan- 
nel HL, opened directly upon the Well, where he found 
the baskets, cords, and other implements, which had been 
left by the workmen. The opening of this communication 
afforded a complete circulation of air along the new passage 
K, and up the shaft B, so as greatly to facilitate his future 
operations. This new passage, however, did not terminate at 
this door- way ; but, continuing 23 feet farther, in the same line 
of inclination, becoming narrower towards the point M, w here it 
took a horizontal direction for the space of above 28 feet, and 
then opened into a spacious chamber, N, immediately under the 
centre of the pyramid, and 100 feet below the base. This cham- 
ber, with the greatest part of the passage leading to it, is all cut 
out of the sohd rock upon which the pyramid is built,” and 
which projects into the body of the pyramid about 80 feet above 
