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Schroter is the only selenographer who gives Mairan a central mountain. In this he is right. I have seen without difficulty on several occasions a low hill near the centre. The formation is surrounded by a number of conspicuous craters and crater-pits. On the N. there is a short rill-like valley, and another, much coarser, on the S.
The persons appointed to examine my system were M. Mairan, M. Hellot, and M. de Fouchy, all three men of merit, but not one of them understood music, at least not enough of composition to enable them to judge of my project.
Mairan had attempted it in those papers in which he developed his bizarre ideas as to central emanations of heat. Euler had brought his profound mathematical genius to bear on the topic, evolving the "extraordinary conclusion that under the equator at midnight the cold ought to be more rigorous than at the poles in winter."
According to Mairan, Buffon, and Bailly, this part is immense. For France, they estimate the heat which escapes from the interior of the earth, at twenty-nine times in summer, and four hundred times in winter, the heat which comes to us from the sun.
M. de Mairan, in the Memoirs of the same Academy, 1737, reasons upon the medicinal powers of music in the following manner: "It is from the mechanical and involuntary connexion between the organ of hearing, and the consonances excited in the outward air, joined to the rapid communication of the vibrations of this organ to the whole nervous system, that we owe the cure of spasmodic disorders, and of fevers attended with a delirium and convulsions, of which our Memoirs furnish many examples."
Fontenelle, Montesquieu, Mairan, Helvetius who was then quite young and present rather as a hearer than a speaker, Marivaux and Astruc, formed the nucleus of this clever society and led the conversation.
Malebranche eluded the question, and could not assign the paralogism, after which Mairan so earnestly sought: ‘It is not that the paralogism is in such or such places of the Ethique, it is everywhere.’ ” In this impatient judgment, Father Malebranche uttered more truth than he could very well perceive; the paralogism is truly everywhere, because this whole edifice of words, “this frightful chimera,” is really assumed in the arbitrary definition of the term substance.
I remember that dining one day at Clichy, at Madam Dupin's, with Crommelin, resident from the republic, and M. de Mairan, the latter openly declared the council owed me a present and public honors for the work, and that it would dishonor itself if it failed in either.
Besides divesting the theory of climates of an error which occupied a prominent place in science, supported as it was by the imposing authority of Mairan, of Bailly, and of Buffon, Fourier is entitled to the merit of a still more striking achievement: he has introduced into this theory a consideration which hitherto had been totally neglected; he has pointed out the influence exercised by the temperature of the celestial regions, amid which the hearth describes its immense orb around the sun.
The great literary men whom Mme. de Tencin gathered about her, Fontenelle, Montesquieu, Mairan, Marivaux, Helvétius, Marmontel, were called her menagerie, or her bêtes. Among them, Marivaux received a pension of one thousand écus from her, besides drawing at will upon the exchequer of an old maid by the name of Saint-Jean.
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