18. 
19. 
20. 
21. 
22. 
23. 
24. 
25 
GENERAL MEETING. 71 
A bed of clean, white, sharp sand, about 2’ thick. (These last 
nine feet were difficult to work. The material could not be 
shovelled, and was too sandy to pump.) 
A layer of red sand about 1’ thick, containing on one side of 
the shaft a clayey sediment with lignite, and on the other a 
ferruginous conglomerate. 
5’ of blue-black, hard clay, running into a sandy sediment, 
and this, in turn, into the next stratum. 
3.5’ of clean, white sand. 
2’ of dark green, compacted sand, containing pebbles and 
lignite. 
1.5’ of fine, sharp sand, almost apple-green in color. Beneath 
this lay the irregular surface of No. 24. 
Dark, coarse-grained, soft, chloritic rock. This rock could be 
easily removed by the pick to a depth of three feet, where 
blasting was begun at about twenty-six feet above mean 
tide. The rock grew harder as the depth increased for about 
ten feet, when it became a chloritic gneiss, and in general 
remained of that nature through about thirty feet to the 
bottom of the tunnel grade, or seventeen feet below mean 
tide. 
5TH MEETING. JUNE 7, 1884. 
Vice-President Briur1nqs in the Chair. 
Thirty-five members and guests present. 
Mr. G. K. GruBeErt presented a 
PLAN FOR THE SUBJECT BIBLIOGRAPHY OF NORTH AMERICAN 
GEOLOGIC LITERATURE. 
Mr. J. W. Powe. presented a slightly different plan for the 
same purpose. 
of 
These plans proposed to establish at the outset a limited number 
divisions of the subject-matter of the literature and to simul- 
taneously prepare a bibliography of each. 
