Tenerife is considered of more value than all the other Canaries: the inhabitants however, in scarce seasons, receive supplies from the Grand Canary; but their vineyards here are said to be greatly superior. Their produce of corn, though exceedingly good, is not sufficient for their consumption; and owing to this the Americans have an advantageous trade here for their flour and grain, and take wine in return. The town of Santa Cruz is about half a mile in extent each way, built in a regular manner, and the houses in general large and airy, but the streets are very ill paved. I am told that they are subject to few diseases; but if any epidemic distemper breaks out it is attended with the most fatal consequences, particularly the smallpox, the bad effects of which they now endeavour to counteract by inoculation. For this reason they are very circumspect in admitting ships to have communication with the shore without bills of health. A sloop from London, called the Chance, William Meridith, master, bound to Barbados, out nineteen days from the Downs, came into the road the day before we sailed. She had suffered much by the bad weather but, having brought no bill of health, the governor would not allow any person to come on shore unless I could vouch for them that no epidemic disease raged in England at the time they sailed, which I was able to do, it being nearly at the same time that I left the land; and by that means they had the governor's permission to receive the supplies they wanted without being obliged to perform quarantine. Thursday 10. Having finished our business at Tenerife on Thursday the 10th we sailed with the wind at south-east, our ship's company all in good health and spirits. I now divided the people into three watches, and gave the charge of the third watch to Mr. Fletcher Christian, one of the mates. I have always considered this as a desirable regulation when circumstances will admit of it on many accounts; and am persuaded that unbroken rest not only contributes much towards the health of a ship's company but enables them more readily to exert themselves in cases of sudden emergency. As it was my wish to proceed to Otaheite without stopping I ordered everybody to be at two-thirds allowance of bread: I also directed the water for drinking to be filtered though dripstones that I had bought at Tenerife for that purpose. In the evening we passed the south end of Tenerife which is a round lump of land that, from the lowness of the contiguous land, has at a distance the appearance of a separate island. By our run from the bay of Santa Cruz I make the latitude of the south end of Tenerife to be 28 degrees 6 minutes north.