27 
Shells — Concluded 
Presented: 
Olaf 0. Nylauder, R.R. No. 4, Cariboo, Maine, U.S.A. 
Three specimens of Helisoma antrosum portagense (F. C. Baker) (topo- 
types) — Portage lake, on Fish river, Aroostook county, Maine. Recent. 
Concretions and Sediments 
Presented : 
H. M. Ami estate (through D. Leechman). 
A concretion in cherty matrix from France, probably Dordogne. ? age. 
A. L. Carter, 172 Parkwood Ave., Kenmore, N.Y., UBA. 
(816) and (838). Marcasite concretions from Alden, N.Y. Devonian. 
Prof. C. V. Douglas, Dept, of Geology, Dalhousie Univ., Halifax, N.S. 
One specimen illustrating crossbedding, Nictaux Falls district, NJ3. 
H. W. R. Gemmil, Dauphin, Man. 
Concretion ? with central hole, from gravel pit at Bield, Manitoba. 
I. G. Reimann, Buffalo Museum of Science, Buffalo, N.Y., USA. 
Marcasite concretions with fossils as nuclei. 
Prof. Will Scott, University of Indiana. 
Marl ball from lake bottom: East Littoral, 3rd. basin, James lake, Indi- 
ana. Recent. 
H. A. S. Vokes, Dungannon, Ont. 
Oolite (composed of Si02) found loose near school, Dungannon, Ont. 
Silurian? 
From Members of Staff: 
E. M. Kindle. 
Sediment from spring break-up flood. Greens creek, east of Ottawa, 300 
yards north of Montreal road. Recent. 
Manganese concretions, various lakes in Nova Scotia. Recent. 
Stove lid encrusted with gravel cemented with ferruginous deposit. West 
dock, Pelee island, Lake Erie. Recent. 
E. D. Kindle. 
Concretions in Pleistocene clay, 6 miles north of Amos, Quebec. (From 
clay in upper 4 feet of well.) Pleistocene. 
B. R. MacKay. 
Rocky Mountain quartzite showing honeycomb weathering, Blairmore 
ridge, Bluff Mountain, Blairmore, Alta., 1932. 
Rocky Mountain quartzite (Carboniferous). 
(a) Concretions in phosphate ore. 
(b) Fossil in phosphate ore. Jurassic. 
(c) Sample of phosphate ore. 
D. C. Maddox. 
RippJe-mark. Drift — north shore South Saskatchewan river, sec. 31, tp. 
19, range 11, W. 3rd mer. 
M. E. Wilson. 
Three specimens? concretions — south shore of South channel, 1 mile north- 
west of Fitzroy Harbour, Ont. Potsdam or Beekmamtown. 
DIVISION OF MINERALOGY 
Eugene Poitevin, Chief of the Division, reports as follows: 
After many years of faithful service Mr. A. T. McKinnon, Senior 
Museum Assistant, was superannuated on February 1, 1934. 
During the fiscal year just ended the mineralogists of the division, 
Eugene Poitevin and H, V. Ellsworth, examined a very large number of 
minerals and rocks for prospectors, and others interested in the mineral 
industry. Over 450 memoranda were issued through the Director of the 
Geological Survey. 
