THE BASIC MASSIVE ROCKS, ETC. 715 



8795 (3534) On Mishiwishiwi river, near centre of N*4 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. 



S803 (3537) S.EJ( N r E.# Sec. 7-63-8 W., 250 paces S. of S.E. point 



of Snowbank Lake. 

 8869 (4061) S.E^ Sec. 14-64-7 W. 

 8S96 (3856) N.W# 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.Ej^ Sec. 8-59-10 W. 



i°44i (5 OI 4) 1 



10442 (5015) I In order from S. to N. along a stream running from 



10443 (5 OI 6) V a small lake northward into Birch Lake. First speci- 



10444 (5°7°) men from about N. side of T. 59 R. 10 W. 

 io445 (5071) J 



10537 (5160) S:Ei< S.W^ Sec. 33-65-5 W. 



10538 (4985) S.E-# S.E# Sec. 32-65-5 W. 



10539 (4986) S.WJ{ S.E%" 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), 



IO444 (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 



