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THE BASIC MASSIVE ROCKS, ETC.
715
| 8795 | (3534) On Mishiwishiwi river, near centre of N½ T. 61-7 W. | ||
| 8796 | (3848) On Mishiwishiwi river, about 2 miles E. of 8795. | ||
| 8800 | (3535) On Mishiwishiwi river, near S. side T. 62-8 W. | ||
| 8803 | (3537) S.E¼ N.E¼ Sec. 7-63-8 W., 250 paces S. of S.E. point of Snowbank Lake. | ||
| 8869 | (4061) S.E¼ Sec. 14-64-7 W. | ||
| 8896 | (3856) N.W¼ Sec. 6-64-5 W. | ||
| 10000 | (3691) | ||
| 10438 | (5068) Half way down W. side Greenwood Lake, Sec. 29-64-2 E. | ||
| 10439 | (5069) Outlet Greenwood Lake, Sec. 33-64-2 E. | ||
| 10440 | (5013) Ca. S.E¼ Sec. 8-59-10 W. | ||
| 10441 | (5014) | In order from S. to N. along a stream running from a small lake northward into Birch Lake. First specimen from about N. side of T. 59 R. 10 W. | |
| 10442 | (5015) | ||
| 10443 | (5016) | ||
| 10444 | (5070) | ||
| 10445 | (5071) | ||
| 10537 | (5160) S.E¼ S.W¼ Sec. 33-65-5 W. | ||
| 10538 | (4985) S.E¼ S.E¼ Sec. 32-65-5 W. | ||
| 10539 | (4986) S.W¼ S.E¼ Sec. 32-65-5 W. East end of portage between lake Kabamitchikamak and small lake in Sec. 32-65-5 W. | ||
| 10569 | (5181) 1200 paces south N.W. corner Sec. 29-65-4 W. | ||
| 10570 | (4995) 1500 paces S. of N.W. corner Sec. 29-65-4 W. | ||
| 10638 | (5242) North of centre of Sec. 18-64-3 E. | ||
SHOWING APPARENT REACTION RIMS.
6130 (3203), 7025 (2091), 8792 (3532), 8793 (4259), 8795 (3534), 8800 (3535), 8803 (3537), 10000 (3691), 10439 (5069), 10442 (5015), 10444 (5070).
Note.—The first number given in each case is the number of the specimen in the collection of the Lake Superior Division of the U. S. Geol. Survey. The numbers in parentheses are those of the corresponding thin sections.
W. S. Bayley.
Waterville, Me., July 1, 1893.
Correction.—In the reference (on page 591 of this Journal) to Dr. Wadsworth's work on the Intrusive Basic Rocks of the Marquette region, the date of the publication of the "Notes on the Geology of the Iron and Copper Districts of Lake Superior," is given as 1881. It should be 1880.
It is also stated on the same page that Wadsworth declared these rocks to consist largely of diabase and coarse basalt, both massive and slightly schistose. It was, of