places well-known objects in strange positions, but brings totally new subjects of contemplation before our eyes, and leads us to feel, perhaps more strongly than upon any other occasion, the full gratification which novelty on the grandest scale is capable of producing.  I shall never forget the impatience with which I have often watched the approach of darkness after a long day’s run to the south, knowing that, in a few moments, I was to discover celestial phenomena heretofore concealed from my view.

After slanting through the north-east Trade-wind, we reached that well-known but troublesome stage in the voyage, so difficult to get over, called the Variables.  This region has acquired its title from the regular Trades not being found there, but in their place unsteady breezes, long calms, heavy squalls, and sometimes smart winds from the south and south-westward.  These Variables, which sorely perplex all mariners, even those of most experience, while they drive young ones almost out of their senses, are not less under the dominion of the causes which regulate those great perennial breezes the Trades, blowing to the northward and southward of them.  Their laws, however, are not quite so readily understood, and consequently are not so easily allowed for in the practice of navigation.

When we actually encounter, on the spot, and for the first time, a crowd of new circumstances, of which, previously, we have only known the names, or have merely heard them described by others, we feel so much confused and bewildered, that we fly eagerly to the nearest authority to help us out of the scrape.  It generally happens, in these cases, that the reference does not prove very satisfactory, because the actual circumstances with which we are engaged are rarely similar in all their bearings to those with which we compare them; and when this is not the case, the blindfold method of proceeding in the beaten path is very apt to mislead.

As an illustration of this kind of deception, it may be stated that navigators, whose actual experience has not extended to the tropical regions, are very apt, in poring over the voyages of others, to acquire, insensibly, a very confident notion that each of the great Trade-winds blowing on different sides of the Line (the North-east and the South-east by name), are quite steady in their direction; and that, in the equatorial interval which lies between them, only calms and light winds are to be found.  Moreover, inexperienced persons generally believe this interval to be equally divided by the equator, and that both the breadth and the position of this calm region continue unchanged throughout the whole year.  Now, here are four important mistakes,—­important both in a scientific and in a practical point of view.  For, 1st, Not calms and squalls alone, but occasionally fresh and steady winds, are found between the Trades; 2ndly, The belt called the Variables is by no means equally divided by the equator; neither, 3rdly, is