north and 30 deg.

south, and which I am about to describe, will now, I imagine, be readily understood.
Before setting out, however, I must strongly recommend any one wishing to see these matters clearly, to have them fixed in his mind to useful purpose, to follow both the theoretical and the practical parts of this explanation with the assistance of a terrestrial globe.
Most ships touch at Madeira, either to take in a stock of wine, to get fruit and vegetables, or to form a pleasant break in the early and most disagreeable part of the voyage.

Some ships pass barely in sight of the high mountain which rises above the town of Funchal, and satisfy themselves with taking sights for verifying the rates of their chronometers when on the meridian of the island; while others tantalise their passengers still more by sweeping through the roads, without anchoring, or communicating with the shore.

The captains by such ships are pretty deeply, if not very loudly, abused by all hands, passengers especially, who are perhaps the most dissatisfied, because the most idle, of mortals.

Shortly after leaving Madeira, which is in 32-1/2 deg.