Putnam.] 
122 
[January 5, 
The following literature offers a somewhat curious commentary 
upon the preceding described action of Logan. “ The crystalline 
limestones of Canada, with those of New York and the New 
England States, may be divided into four classes, belonging to as 
many different geological periods. The first and most ancient occur 
in that system of rocks, named by Mr. Logan the Laurentian Series, 
which extending from Labrador to Lake Huron, forms the northern 
boundary of the Silurian System of Canada and the United 
States.” (T. Sterry Hunt, Am. Jour. Sci. 1854 (2), XYXXI, 193). 
“ It was therefore proposed to give the older group a distinc- 
tive name, and inasmuch as these rocks form the hills on the north 
side of the St. Lawrence, to which Mr. Garneau, the Canadian 
historian, had already given the geographical name of Lauren- 
tides, the distinctive appellation of Laurentian proposed by the 
present writer (Dr. Hunt) was applied to them in the Report of 
the Geological Survey of Canada for 1852 (page 9) which was 
published in 1854.” (T. Sterry Hunt, Azoic Rocks, Part I, p. 72, 
Sec. Geol. Survey Penn., E.) 
“In 1854 the writer (Dr. Hunt) in concert with Logan pro- 
posed for the ancient crystalline rocks of the Laurentide Moun- 
tains .... the name of Laurentian.” (T. Sterry Hunt, Proc. 
Am. Assoc. Adv. Sci., 1879, XXYXIX, 283.) 
The President presented by title a paper 1 and made some 
farther remarks on the remarkable carboniferous millipedes shown 
by him at previous meetings. He believed that all the carbonif- 
erous species yet discovered belonged to the same group, which 
should rank as a distinct suborder of the Myriapoda. Remarks 
on the subject were made by Messrs. Hyatt, Morse, and Burgess. 
Mr. F. W. Putnam called attention to a number of rude stQne 
implements on the table, which he had brought in from the 
anthropological collection at Cambridge. Some of these speci- ' 
mens were palaeolithic implements from the river gravels of 
France. Others were examples of the now pretty well known 
palaeolithic implements from the glacial gravel at Trenton, N. J. 
1 To be published in the Society’s Memoirs. 
