Tract Quotes (7 quotes)
Have you ever plunged into the immensity of time and space by reading the geological tracts of Cuvier? Transported by his genius, have you hovered over the limitless abyss of the past, as if held aloft by a magician’s hand?
From 'La Peau de Chagrin' (1831). As translated as by Helen Constantine The Wild Ass’s Skin (2012), 19.
Locksley Hall, that in the distance overlooks the sandy tracts.
And the hollow ocean-ridges roaring into cataracts.
Many a night from yonder ivied casement, ere I went to rest,
Did I look on great Orion sloping slowly to the west.
Many a night I saw the Pleiads, rising thro’ the mellow shade.
Glitter like a swarm of fireflies tangled in a silver braid.
And the hollow ocean-ridges roaring into cataracts.
Many a night from yonder ivied casement, ere I went to rest,
Did I look on great Orion sloping slowly to the west.
Many a night I saw the Pleiads, rising thro’ the mellow shade.
Glitter like a swarm of fireflies tangled in a silver braid.
From 'Locksley Hall' (1842), collected in Alfred Tennyson and William James Rolfe (ed.) The Poetic and Dramatic Works of Alfred, Lord Tennyson (1898), 90.
Of the various anesthetics which have been introduced for surgical use, only two deserve to be considered, and in order of preference they are ether and chloroform. In general, there is no comparison between these agents. Ether is so much safer than chloroform that the latter is fast disappearing in practice. In the present rapid progress of science it can not but be a short while until chloroform will only he employed in a very limited number of cases. The estimated death-rate after ether is 1 in 20,000, in chloroform 1 in 3,000. All of the objections to ether by the advocates of chloroform narcosis—namely, its slowness of action, irritation of the respiratory tract, nausea and vomiting, inflammability, extra quantity required, etc.—fade into insignificance when brought face to face with the fact that about seven lives are sacrificed by chloroform to one by ether.
In A Text-Book on Surgery: General, Operative, and Mechanical (1887), 24.
Returning now to the Malay Archipelago, we find that all the wide expanse of sea which divides Java, Sumatra, and Borneo from each other, and from Malacca and Siam, is so shallow that ships can anchor in any part of it, since it rarely exceeds forty fathoms in depth; and if we go as far as the line of a hundred fathoms, we shall include the Philippine Islands and Bali, east of Java. If, therefore, these islands have been separated from each other and the continent by subsidence of the intervening tracts of land, we should conclude that the separation has been comparatively recent, since the depth to which the land has subsided is so small. It is also to be remarked that the great chain of active volcanoes in Sumatra and Java furnishes us with a sufficient cause for such subsidence, since the enormous masses of matter they have thrown out would take away the foundations of the surrounding district; and this may be the true explanation of the often-noticed fact that volcanoes and volcanic chains are always near the sea. The subsidence they produce around them will, in time, make a sea, if one does not already exist.
Malay Archipelago
The responsibility for maintaining the composition of the blood in respect to other constituents devolves largely upon the kidneys. It is no exaggeration to say that the composition of the blood is determined not by what the mouth ingests but by what the kidneys keep; they are the master chemists of our internal environment, which, so to speak, they synthesize in reverse. When, among other duties, they excrete the ashes of our body fires, or remove from the blood the infinite variety of foreign substances which are constantly being absorbed from our indiscriminate gastrointestinal tracts, these excretory operations are incidental to the major task of keeping our internal environment in an ideal, balanced state. Our glands, our muscles, our bones, our tendons, even our brains, are called upon to do only one kind of physiological work, while our kidneys are called upon to perform an innumerable variety of operations. Bones can break, muscles can atrophy, glands can loaf, even the brain can go to sleep, without immediately endangering our survival, but when the kidneys fail to manufacture the proper kind of blood neither bone, muscle, gland nor brain can carry on.
'The Evolution of the Kidney', Lectures on the Kidney (1943), 3.
They say,
The solid earth whereon we tread
In tracts of fluent heat began,
And grew to seeming-random forms,
The seeming prey of cyclic storms,
Till at the last arose the Man. …
The solid earth whereon we tread
In tracts of fluent heat began,
And grew to seeming-random forms,
The seeming prey of cyclic storms,
Till at the last arose the Man. …
From poem, 'In Memoriam A.H.H.' written between 1833-50, and first published anonymously in 1850. Collected in Poetical Works of Alfred Tennyson (1860), Vol.2, 147.
To suppose that so perfect a system as that of Euclid’s Elements was produced by one man, without any preceding model or materials, would be to suppose that Euclid was more than man. We ascribe to him as much as the weakness of human understanding will permit, if we suppose that the inventions in geometry, which had been made in a tract of preceding ages, were by him not only carried much further, but digested into so admirable a system, that his work obscured all that went before it, and made them be forgot and lost.
In Essay on the Powers of the Human Mind (1812), Vol. 2, 368.
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) -- 
