214 
THE GEOLOGIST. 
corps at Montreal, upon the subject. That gentleman immediately 
visited the spot, examined the cave, in which were found a number 
of bones ; and these, by favour of Dr. Wilson of Perth, were all 
brought to Montreal. 
The description of this cave is given by Dr. Bigsby in the Amer. Jour, 
of Science (vol. ix., June, 1825, p. 354) in two letters to the editor, 
dated Philadelphia, February and March, 1825. His information 
was derived from Lieut. Robe. The cavern is ten feet below the 
sm'face, with which it communicates by a sort of shaft or passage 
leading downwards, just large enough to admit the entrance of a 
man, being two feet three inches wide, by one foot nine inches broad. 
The cave is twenty-five feet long by fifteen broad, and is five feet 
high in the middle, gTadually lowering at each end. At that part of 
it the most remote from the enti'ance, there is a fissure two feet by 
six inches, and therefore too small to permit of fm-ther penetration. 
The floor was covered with fragments of dark coloured granular lime- 
stone, of which the cave itself is fonned ; whilst the sides and roof 
were coated with small mamillary concretions of calc-spar. The 
entu'e township of Lanark consists of the Laurentian rocks, consist- 
ing of gneiss and interstratified bands of crystalline limestone, and I 
have no doubt whatever that it is in one of these bands that the cave 
is developed. If it has not been further investigated since its dis- 
covery, it might be worth while to enlarge the fissm-e at its extremity, 
particularly if it is found on examination to extend much fui'thur in- 
wards. 
A quantity of very large bones, in a state similar to that obser^^ed 
in grave yards, were found chiefly m a heap near, but not under, the 
aperture from above, many others were scattered among the debris 
of the floor. Mr. Robe conjectured that the animal to which these 
remains belonged, must have been too large to have entered the cave 
alive or whole. As no mention was made whether the bones were 
encrusted with stalagmite, or formed a breccia, it is presumed such 
appearances did not exist. In June, 1859, Dr. Bigsby related to me 
that the bones were transmitted by Lieut. Robe to Dr. Buckland for 
examination and description ; but although they were received, not 
any published notice of them ever appeared. It is probable, however, 
that they were those of a deer, which Dr. Bigsby seems to think must 
have fallen in. If any remains of the antlers were among them 
when discovered, there could be no doubt of its being the animal 
supposed. 
23. — Qu.\RTZ Caveex, Leeds. 
This cavity is perhaps hardly deserving of a place in this paper, 
but as it illustrates, to a certain extent, the formation of caverns by 
explosions in pyritous veins, it is not passed over, although its exis- 
tence may now be quite forgotten. It is described in "A Sketch of 
the Topography and Geology of Lake Ontario," by Dr. Bigsby in the 
" Philosophical Magazine" for 1829. He describes a district tliirteen 
