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Updated: June 17, 2025
In the first place, as regards structural characteristics, I endeavoured to show you, by the skeletons which I had upon the table, and by reference to a great many well-ascertained facts, that the different breeds of Pigeons, the Carriers, Pouters, and Tumblers, might vary in any of their internal and important structural characters to a very great degree; not only might there be changes in the proportions of the skull, and the characters of the feet and beaks, and so on; but that there might be an absolute difference in the number of the vertebrae of the back, as in the sacral vertebrae of the Pouter; and so great is the extent of the variation in these and similar characters that I pointed out to you, by reference to the skeletons and the diagrams, that these extreme varieties may absolutely differ more from one another in their structural characters than do what naturalists call distinct SPECIES of pigeons; that is to say, that they differ so much in structure that there is a greater difference between the Pouter and the Tumbler than there is between such wild and distinct forms as the Rock Pigeon or the Ring Pigeon, or the Ring Pigeon and the Stock Dove; and indeed the differences are of greater value than this, for the structural differences between these domesticated pigeons are such as would be admitted by a naturalist, supposing he knew nothing at all about their origin, to entitle them to constitute even distinct genera.
By laying down these definite statements we gain the advantage that we isolate hypnotism from the frauds and empty shades, from the ghosts and hobgoblins with which it used to be associated in the border-region which we have undertaken to explore. Science deals with well-ascertained facts. Now of mesmerism, animal magnetism, and its kindred, odylism, we have seen that we have no reliable facts.
But the affair was altogether different from anything that Mrs. Pasmer had imagined. She had supposed and intended that Alice should meet some one in Boston, and go through a course of society before reaching any decisive step. There was to be a whole season in which to look the ground carefully over, and the ground was to be all within certain well-ascertained and guarded precincts.
These, indeed, do not possess even the degree of evidence which pertains to a well-ascertained empirical law; but admit of refutation on the empirical ground itself, without ascending to casual laws. A little reflection, indeed, will show that mere negations can only form the ground of the lowest and least valuable kind of empirical law.
"I welcome and support this measure, not only for its own sake," he said, "but more because it is, I believe, simply the precursor of the general movement which is in progress, all over the world, and in other industries besides this, towards reconciling the conditions of labor with the well-ascertained laws of science and health."
So utterly helpless are the masters, that when Huber shut up thirty of them without a slave, but with plenty of the food which they like best, and with their larvae and pupae to stimulate them to work, they did nothing; they could not even feed themselves, and many perished of hunger. What can be more extraordinary than these well-ascertained facts?
We must not forget that it is a well-ascertained fact that in later ages, the minute seed-spores of forest trees were in such abundance as to form important seams of coal in the true carboniferous era, the trees which gave birth to them being now classed amongst the humble cryptogams, the ferns, and club-mosses, &c.
This remark of Ned had reference to a well-ascertained fact, that, when a storm was coming, the fish invariably left the neighbourhood of the rock; doubtless in order to seek the security of depths which are not affected by winds or waves. While Dove and his comrade commented on this subject, two of the other men had retired to the south-eastern end of the rock to take a look at the weather.
These views, grounded as they are on the perfectly well-ascertained occurrence of a former Glacial period, seem to me to explain in so satisfactory a manner the present distribution of the Alpine and Arctic productions of Europe and America, that when in other regions we find the same species on distant mountain-summits, we may almost conclude, without other evidence, that a colder climate formerly permitted their migration across the intervening lowlands, now become too warm for their existence.
That invaluable gift which enables some men to cast aside trouble and turn their thoughts and energies swiftly and decisively into new channels can be largely strengthened by the action of the will, but according to some physiologists it has a well-ascertained physical antecedent in the greater or less contractile power of the blood-vessels which feed the brain causing the flow of blood into it to be stronger or less rapid.
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