VOECANIES (OF THE MICHIGAMMIE DIS TRIGT: 819 
America can be seen by referring to the brief reports of their 
occurrence in the Eastern townships of Quebec and in New 
Brunswick and Nova Scotia, which have been made by Bailey," 
Ells,? Fletcher,3 Matthew,* Selwyn,5 and Low.® 
Similar areas are known in Newfoundland, especially from the 
peninsula of Avalon, through the reports of Howley,’ Jukes,° 
and Murray.? 
Somewhat younger are the acid and basic volcanics described 
by Shaler*? from Maine, Matthew™ from New Brunswick, and 
Bayley from North Haven, Maine. 
Basic volcanics alone of Huronian age have been described 
from the Penokee area, Wisconsin, by C. R. Van Hise,*3 and to 
judge from Bell’s** reports, occur in considerable quantity to the 
north of Lake Huron and around the shores of Hudson’s Bay. 
™Can. G.S., 1870-1, pp. 13-240; 1877-8, DD.; 1878-9, D.; Proc. Am. Asso. 
Adv. Sci., 29th meeting, 1880, pp. 415-421. 
2Can. G. S., Vol. Il, J., New Ser., 1886; 1882-4, E.; 1879-80, D.; 1877-8, 
D.; 1878-9, D. 
3Can. G.S., Vol. IL, P., New Ser., 1886. 
4Can.G.S., Vol. Il., Rep. 3, pp. 387-391, 2d Ser., 1888. Q.J. G. S., Lon- 
don, Vol. XXI., pp. 422-434, 1865. Can. G. S., 1870-1, pp. 13-240; 1878-9, D. 
5 Proc. and Trans. Royal Soc. of Can. for 1882-3, Vol. I., Sec. 4, pp. I-13. 
6 Can. G. S., 1882-4, F. 
7G. S. of Newfoundland for the year 1881, pp. 6-23. 
® Tbid., 1839-40, pp. 160. 
9Tbid., pp. 111-136. G.S. 1872, pp. 279-297. 
70 Prel. Rep. on the Geol. of Cobscook Bay. Am. Journ. Sci., 3d Ser., Vol. XXXIL, 
p- 40. 1886. Geol. of Mount Desert. Ann. Rep. U. S. G, S., Vol. VIL, p. 1042. 
1889. 
™ Rep. on the Upper Silurian and Kingston (Huronian) of Southern New Bruns- 
wick. Geol. Sur. of Can., Rep. 1877-8 E. 
12The Spherulitic Volcanic Rocks of North Haven, Maine. Bull. Geol. Soc. of 
Am. Vol. VI., 1894, p. 474. 
*3 IRVING AND VAN HisE: Penokee Iron-bearing Series of Michigan and Wis- 
consin. Mon. 19, U.S.G.S., p. 410. 1892. 
™ Can. G. S., Reps. for 1876-7, p. 213; 1877-8 C.; 1779-80 C. The Geol. and 
Economic Minerals of Hudson’s Bay and Northern Canada, Proc. and Trans, Royal 
Soc. Can., Vol. II, Sec. 4, p. 241. 1884.J 
