this remarkable strait—is situated in lat. 68° 32′ N., long. 97° 35′ W. On the continent, on Ross's Land, and on the larger islands, reindeer were seen browsing the scanty herbage that springs tip amongst the shingle; and stone marks, set up by the natives to deceive or decoy them, appeared in many well-chosen places. While pursuing a small herd, seen from our encampment, about twelve miles south-south-east of the strait, I had a fine view, from an eminence, of the inland country, rising into stony elevations, shaded with green and diversified by many small lakes.
The 12th of August was signalized by the most tremendous thunderstorm I ever witnessed in these northern regions, accompanied by torrents of rain, and some heavy showers of hail. I afterwards ascertained that this storm passed violently over Great Slave Lake, and lightly over Fort Simpson on Mackenzie River, the day before—the 11th; appearing in both cases to come from the north-east, while, with us, it came in the opposite direction. It must, therefore, have travelled from south-west to north-east, with a rotatory motion, agreeably to the theory of Colonel Reid. Towards evening, when its fury was somewhat spent, I took advantage of the impossibility of proceeding to make a set of observations with the dipping-needle. The result, considering the