We passed the lengthened shores which give outline to Taquimenon Bay.  We turned the long and bleak peninsula of White Fish Point, and went on to the sandy margin of Vermilion Bay.  Here we encamped at three o’clock in the afternoon, and waited all the next day for the arrival of Lieut.  Robert Clary and his detachment of men, from Fort Brady, who were to form a part of the expedition.  With him was expected a canoe, under the charge of James L. Schoolcraft, with some supplies left behind, and an express mail.  They both arrived near evening on the 28th, and thus the whole expedition was formed and completed, and we were prepared to set out with the latest mail.  Mr. Holliday came in from his wintering grounds about the same time, and we left Vermilion Bay at four o’clock on the morning of the 29th, J.L.S. in his light canoe, and chanting Canadians for Sault St. Marie, and we for the theatre of our destination.

We went about forty miles along a shore exclusively sandy, and encamped at five o’clock in the evening at Grand Marais.  This is a striking inlet in the coast, which has much enlarged itself within late years, owing to the force of the north-west storms.  It exhibits a striking proof of lake action.  The next day we passed the naked and high dunes called Grand Sable, and the storm-beaten and impressive horizontal coat of the Pictured Rocks, and encamped at Grand Island, a distance of about 130 miles.  I found masses of gypsum and small veins of calcareous spar imbedded in the sandstone rock of the point of Grand Sable.  Ironsand exists in consolidated layers at the cliff called Doric Rock.

The men and boats were now in good traveling trim, and we went on finely but leisurely, examining such features in the natural history as Dr. Houghton, who had not been here before, was anxious to see.  On the 1st of July, we encamped at Dead River, from whence I sent forward a canoe with a message, and wampum, and tobacco, to Gitchee Iauba, the head chief of Ancekewywenon, requesting him to send a canoe and four men to supply the place of an equal number from the Sault St. Marie, sent back, and to accompany me in my voyage as far as La Pointe.

GEOLOGY.—­We spent the next day in examining the magnesian and calcareous rubblestone which appears to constitute strata resting against and upon the serpentine rock of Presque Isle.  This rock is highly charged with what appears to be chromate of iron.  We examined the bay behind this peninsula, which appears to be a harbor capable of admitting large vessels.  We ascended a conical hill rising from the bay, which the Indians call Totoesh, or Breast Mountain.  Having been the first to ascend its apex, the party named it Schoolcraft’s Mountain.  Near and west of it, is a lower saddle-shaped mountain, called by the natives The Cradle Top.  Granite Point exhibits trap dykes in syenite.  The horizontal red sandstone, which forms the peninsula connecting this point with the main, rests against