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Updated: June 5, 2025


But pure observation, as practised by his predecessors, Réaumur and Huber, is often insufficient, or "furnishes only a glimpse of matters." He had recourse, therefore, to artificial observation of the kind known as experimentation, and we may say that Fabre was really the first to employ the experimental method in the study of the minds of animals.

The second case is that detailed by a no less unexceptionable authority than Réaumur in his "Art de faire éclore les Poulets." A Maltese couple, named Kelleia, whose hands and feet were constructed upon the ordinary human model, had born to them a son, Gratio, who possessed six perfectly moveable fingers on each hand and six toes, not quite so well formed, on each foot.

Now those who decided to continue the feasting all got into their waiting conveyances. With the thermometer at fifteen degrees Reaumur, a coachman's life is not one altogether to be envied in Russia, but apparently custom will make anything endurable. "I know you like the troika, Tamara," Princess Ardácheff said. "So you go with Olga and Gritzko and your friend only be sure you wrap up your head."

O Réaumur, who used to invite marchionesses to see your caterpillars change their skins, what would you have said of a future disciple conversant with such squalor as this? Perhaps it is well that we should not be ignorant of it, so that we may have compassion with that of the beast.

It is with Réaumur that we are first of all tempted to compare him; and some have chosen to see in him only one who has continued Réaumur's work. In reality he has eagerly read Réaumur, although at heart he does not really enjoy his writings; he has drunk from this fruitful source, but he owes him no part of his own rich harvest.

One of the German leaders, describing this encircling movement to the southeast from the north in which he played a part, says: "The roads and the weather were beyond all description twelve to fifteen degrees Reaumur, with a cutting wind and driving snow, with nothing to eat, as the field kitchens on these roads could not follow.

Twenty grains of this yeast are ground up in a small quantity of freshly drawn milk in a clean porcelain mortar, and shaken in a quart bottle with one pound of fresh milk, all mare's milk, naturally, after which it is lightly corked with a bit of wadding and set away in a temperature of +22 degrees to +26 degrees Reaumur.

Tremblay, Bonnet, and de Geer owed their vocations to Réaumur, not to speak of Huber, whose genius he inspired.

We may dissect, we may scrutinize organs under the magnifying glass, examine wing-cases, count the nervures of the wings, the number of articulations in the limbs; we may reckon every point, like Réaumur forgetting not a line, not a hair; we may compare and measure every portion of the mouth, and define the class; and we shall not find a single point in all this physical architecture which will positively inform us of the habits of the insect.

It triumphs at last; the cockroach yields to its efforts, and little by little penetrates the hole. As may be seen, the labour is laborious and painful, and may present itself beneath various aspects which call for a certain ingenuity on the part of the animal. Réaumur, Memoires pour servir

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