A 1. 

 Dr. Robert Bell has given localities in Canada where 

 rock similar to the following specimens of Lorain 

 County boulders is known to exist in place. The num- 

 bers at the left refer to the Oberlin College Accession 

 list of Lorain Count3' Boulders. The names used were 

 not given by Dr. Bell, and are onU^ meant to give a gen- 

 eral notion of the sort of rock referred to. 



Sudbury District. 



Xo. Xamk of SrECiMEN. SrECiAi. Locality. 



392 Gabbio ; 



834 " 



923 " 



1018 " 



1201 " 



297 " 



586 " (purple. ) 



769 " (coarse.) 



1373 " 



374 Dioritic (?) porphyrite 



551 Very foarsely crvstalline Hornblende 



1 322 Hornblende porphyry 



2072 Volcanic breccia Bear L., so. of L. Panaclie. 



1339 Fine-grained black breccia. 



Bet. Wahnapitie L. and Vermillion L. (Found in no otiier region.) 



358 Greywacke Near La Clocke Port. 



1056 Dark Quartz Conglomerate La Clocke Region. 



373 Fine " " " (dark gray.) 



1260 Light-vellowish Quartzite Near L. Panache. 



1378 Quartz Schist 



1376 Hbld. Granite (hornblende crystals 2 in. thick) Sudbury Village. 



459 (Quartz- Feldspar pf)rphy ry 



North-East side of Georoiax Bay District. 



457 Gabbro-like, (very light.) 



1 372 Coarse Diabase 



556 Protogine G ueiss 



396 Muscovite (Jranite 



624 Weathered Hornblende Granite 



1349 Hornblende Gneiss. ( Augen-gneiss) French River. 



1377 liight Hornblende-Biotite Gneiss 



621 Dark " " " 



398 Hornblende Gneiss 



461 " " 



671 " Schist (with some Plagioclase) French River 



1127 GarnetiferousMica Schist, (dark) French River 



448 White Quartz-Schist 



Montreal River District. 



413 Massive Mottled Gray Quartzite. ..Head-waters of Montreal River. 

 610 Calcareous Sandstone " " " 



