Instead of making casual voyages, in transient ships, they established regular trading houses in the high latitudes
, along the northwest coast of America, and upon the chain of the Aleutian Islands between Kamtschatka and the promontory of Alaska.
Ferguson carefully noted the fact, that he had stopped at four degrees north latitude and seventeen degrees west longitude.
According to the narrative of the German doctor, Ferdinand Werne, the expedition attempted in 1840, under the auspices of Mehemet Ali, stopped at Gondokoro, between the fourth and fifth parallels of north latitude.
In ancient times, the ambassadors of Nero reached the ninth degree of latitude, but in eighteen centuries only from five to six degrees, or from three hundred to three hundred and sixty geographical miles, were gained.
They next made for the first of the great lakes, the one named Tanganayika, situated between the third and eighth degrees of south latitude.
There Burton, who was completely worn out, lay ill for several months, during which time Speke made a push to the northward of more than three hundred miles, going as far as Lake Okeracua, which he came in sight of on the 3d of August; but he could descry only the opening of it at latitude two degrees thirty minutes.
Ferguson carefully remarked that they had not gone beyond the second degree of south latitude, nor the twenty-ninth of east longitude.
It was, therefore, only those portions of Texas and Florida which were situated below this parallel which came within the prescribed conditions of latitude
27@ 7' North latitude
, and 77@ 3' West (Greenwich) longitude.
In the southern hemisphere, if we compare large tracts of land in Australia, South Africa, and western South America, between latitudes
25 deg and 35 deg, we shall find parts extremely similar in all their conditions, yet it would not be possible to point out three faunas and floras more utterly dissimilar.
It could hardly have been a change of temperature, which at about the same time destroyed the inhabitants of tropical, temperate, and arctic latitudes
on both sides of the globe.
The great thing to do, sir," he would tell me on every occasion, when I gave him the chance, "the great thing is to get the ship past 8 d 20' of latitude.
It came at last with a mother-of-pearl sheen at the zenith, such as I had never seen before in the tropics, unglowing, almost gray, with a strange reminder of high latitudes.
Yet such was the fright I had taken of the Moors, and the dreadful apprehensions I had of falling into their hands, that I would not stop, or go on shore, or come to an anchor; the wind continuing fair till I had sailed in that manner five days; and then the wind shifting to the southward, I concluded also that if any of our vessels were in chase of me, they also would now give over; so I ventured to make to the coast, and came to an anchor in the mouth of a little river, I knew not what, nor where, neither what latitude, what country, what nation, or what river.
But as I had no instruments to take an observation to know what latitude we were in, and not exactly knowing, or at least remembering, what latitude they were in, I knew not where to look for them, or when to stand off to sea towards them; otherwise I might now easily have found some of these islands.