We may suppose that only one (F), of the two species which were least closely related to the other nine original species, has transmitted descendants to this late stage of descent.
Thus it is, as I believe, that two or more genera are produced by descent, with modification, from two or more species of the same genus.
We shall, when we come to our chapter on Geology, have to refer again to this subject, and I think we shall then see that the diagram throws light on the affinities of extinct beings, which, though generally belonging to the same orders, or families, or genera, with those now living, yet are often, in some degree, intermediate in character between existing groups; and we can understand this fact, for the extinct species lived at very ancient epochs when the branching lines of descent had diverged less.
The following discussion on the climate of the southern parts of the continent with relation to its productions, on the snow-line, on the extraordinarily low descent of the glaciers, and on the zone of perpetual congelation in the antarctic islands, may be passed over by any one not interested in these curious subjects, or the final recapitulation alone may be read.
On the Height of the Snow-line, and on the Descent of the Glaciers in South America.
As the height of the plane of perpetual snow seems chiefly to be determined by the extreme heat of the summer, rather than by the mean temperature of the year, we ought not to be surprised at its descent in the Strait of Magellan, where the summer is so cool, to only 3500 or 4000 feet above the level of the sea; although in Norway, we must travel to between lat.
But Tarzan sped by her, and as he went, her eyes followed him and she saw the cause of his sudden descent
and his rapid charge across the clearing.
Angry as I was at these words, and ashamed of my own ignorance, I could scarce keep from smiling that a man who was under the lash of the law (and was indeed hanged some three years later) should be so nice as to the descent
of his acquaintances.
I learned that the possessions most esteemed by your fellow creatures were high and unsullied descent
united with riches.
Set in a sprawling, six-floor dungeon, The Descent
can be tackled at any point after a player reaches Skyhold.
In many cases, their situation remains largely invisible, and insufficient recognition and respect has been given to the efforts of people of African descent
to seek redress for their present condition.
Increased signage and emphasis on requirement for heavy vehicles to use low gear not brakes on descent