Philosophical Transactions, Volume 4…
“ The Wind is variable also, but if you be within 100 leagues of the European Continent, it is generally inclined to North-East From 34 degrees, if you be inclining to the coast of Africa, or about the Meridian of the Canaries, the Wind is so certain, and constantly at North-East (or within two points) that it is rare to find it otherwise. Yet in Winter, upon the coast of Africa there are sometimes Westerly storms, that are violent, but of no long continuance. And in Summer, when it is sometimes calme, the Air will come variably. These North-East-Winds hold most commonly to 8. ”
