Note on the Glaciation of Mount Orford,P.Q. 223 



sink, so that what was once dry land is now far beneath 

 the waves. This was shown by the discovery during the 

 excavations at Ireland Island for the floating dock, of 

 trunks of large cedar trees at considerable depths below 

 the present sea bottom, and in dredging the channel lead- 

 ing into Hamilton Harbor the roof of a cave filled with 

 stalactites was broken through, which proves thatthe place 

 where it was found must have been dry land. Trunks of 

 cedar are also found out in the reefs surrounding the 

 islands, which are now altogether submerged. 



No information, so far as I have been able to ascertain, 

 exists as to the depth of the coral formation. . A few years 

 ago an attempt was made by an English scientific society 

 to obtain such information by means of a diamond drill in 

 the Island of Funafuti, in the Southern Pacific, but the 

 experiment failed, owing to the sand filling the bore. It 

 was then proposed to make the experiment in the Bermu- 

 das, but this as yet does not appear to have been done. It 

 would, however, be a matter of great interest, and might 

 prove of much value in determining the age of this recent 

 formation, as well as settle some other questions, if such a 

 project were carried out. 



Note on the Glaciation of Mount Orford, P.Q. 



By Principal Dresser, St. Francis College, Richmond, P.Q. 



In the recent and very interesting " Eeport on the 

 Surface Geology and Auriferous Deposits of South-eastern 

 Quebec," by Mr. E. Chalmers (Annual Eeport Geological 

 Survey of Canada, Volume X., New Series, Part J), it is 

 stated that no evidences of glaciation were observed near 

 the summit of Mount Orford. The extreme height of 

 glacial action, from which tlie Lhickness of the greater 

 Laurentide glacier is calculated, is thought to have been 



