- del, where we finished our observations on the island of
Sky.
As this island lies in the fifty-seventh degree, the air cannot be supposed to have much warmth. The long continuance of the sun above the horizon, does, indeed, sometimes produce great heat in northern latitudes; but this can only happen in sheltered places, where the atmosphere is to a certain degree stagnant, and the same mass of air continues to receive for many hours the rays of the sun, and the vapours of the earth. Sky lies open on the west and north to a vast extent of ocean, and is cooled, in the summer, by a perpetual ventilation, but by the same blast is kept warm in winter. Their weather is not pleasing. Half the year is deluged with rain. From the autumnal to the vernal equinox, a dry day is hardly known, except when the showers are suspended by a tempest. Under such skies can be expected no great exuberance of vegetation. Their winter overtakes their summer, and their harvest lies upon the ground drenched with rain. The autumn struggles hard to produce some of our early fruits. I gathered gooseberries in September; but they were small, and the husk was thick.
The winter is seldom such as puts a full stop to the growth of plants, or reduces the cattle to live wholly on the surplusage of the summer. In the year seventy-one they had a severe season, remembered by the name of the Black Spring, from which the island has not yet recovered. The snow lay long upon the ground, a calamity hardly known before. Part of their cattle died for want, part were unseasonably sold to buy sustenance for the owners; and, what I have not read or heard of before, the kine that survived were so emaciated and dispirited, that they did not require the male at the usual time. Many of the roebucks perished.
The soil, as in other countries, has its diversities. In some parts there is only a thin layer of earth spread upon a rock, which bears nothing, but short brown heath, and perhaps is not generally capable of any better product.
