August 19. Harkers Bay. North shore continued Dunbar's section and my on page 162 did not finish the section on the north shore for want of time. Today I saw here in addition to what is described there atms 120 feet of then bedded and laminated muddy li. They are irregularly bedded and in places distinctly buffy. There are also many zones of flat pettite interst, Engd. All together in the section one sees a little of a white heavy bedded quartzite. He did not go farther east as the craft seemed to expose no more rock. It is less than a half mile to the south of East River. To the above 120 feet must be added at least 214 feet of strata and 290 on page 174. (This means for the north shore 624 feet of argillaceous) described by Dunbar on pages 161-162. I mean this is not the true thickness, men, it is all that is in plain sight and was measured. Whatever the thickness all must be added to the strata of the south shore which is at least 313 feet and may be nearer 400 feet. The latter figure added to that seen along the north shore would give a thickness of at least 734 feet. Further all the strata seen up the river is at least 100 feet of sandstone but this might as much 200 feet, 60 feet of marl and 50 feet of dark sandy li. These at least 160 feet of strata seem to differ from those of both the north and south shores. Therefore we seem to have at least 884 feet of Lower Cambrian strata. See below. The Cambrian seen of Toronto river are the lowest, those of the south shore next, while those of the north shore are the youngest. On the 20th of August I concluded to take only of the Cambrian the 290 feet mentioned above. This leaves the seen L.C. thickness 944 feet. Another calculation makes it from 903-1065 mft adding the 63 feet of East River.