TENERIFF, the most considerable of the Canary islands, being about 45 miles in length and 20 in breadth, abounding with wine, different sorts of fruit, cattle, and game. It is subject to earthquakes; and in 1704 there happened one that destroyed several towns and many thousand people. It is remarkable for a very high mountain called the Peak, which in a clear day may be seen 100 miles off. It was formerly a volcano, and still emits hot sulphureous steams from chinks in different parts. Its height has been computed by Dr Heberden at 15,396 feet, which is but 148 yards less than three miles. On the top is found the natron, or fossil fixed alkali, and likewise some very pure natural sulphur. W. Long. 16. 22. N. Lat. 28. 30.