86 THE CANADIAN NATURALIST. [Vol. viii. 



paribus. The stream referred to drained an ancient lake, known 

 to the "oldest inhabitant" as the Beverly Swamp. This oc- 

 cupies a space of ten miles from south to north (Concession IV. 

 to Concession XI.) and from the town-line west of Beverly 

 through Beverly, West and East Flamboro' inclusive E. to W. 

 " Crook's Creek " flowing- from this evidently contributed most 

 to the formation of Burlington Heights. The swamp is crossed 

 by several gravel ridges or eskers, with an E. and W. strike. 

 They are stratified and average a hundred feet in height, con- 

 taining large numbers of rounded boulders of the underlying 

 Guelph limestones. Niagara debris is, as Mr. Spencer says, 

 almost unknown among the boulders and pebbles of all the 

 deposits in the south western part of the Western Peninsula of 

 Ontario. 



North of Beverly in Puslinch and Guelph Townships, and as 

 far west as Colborne and Goderich Townships, numerous other 

 eskers are visible, some having a N. W. and S.E. strike, some N. 

 and S. S (c .g. Smith's Hill, Colborne Township, and a parallel 

 ridge a mile east,) and some E. and W. Between the eskers the 

 country is often swampy. The eskers are all stratified. 



Except the striae in Beverly and Barton Townships there is no 

 evidence of either glacial or iceberg action near Hamilton, Ont. 

 Several new exposures have been made visible in the Guelph lime- 

 stone of Beverly since the visit of the Geological Survey officers. 

 One of these, half a mile north of Con. V. and north of Rockton, 

 neai to one of the gravel ridges mentioned in the second paragraph 

 above showed striae N. 70 Q W. while at Rockton, two miles away, 

 the striae were N. 79° W. on the ro.idside. At Sheffield three 

 sets of striae occur, the most ancient being N. 75° W., then N. 

 75° E. and N. 40° E. Near Troy are two sets of striae N. 76° 

 W. and N. 70° E. running North of Rockton a mile north of the 

 first exposure are striae N. 70 u E. 



