[3] In Faraday's _induced_ dissymmetry the ray, having once passed through the body under magnetic influence, has its rotation doubled, instead of neutralised, as in the case of quartz, on being reflected back through the body. Marbach has discovered that chlorate of soda produces circular polarisation in all directions through the crystal, while in quartz it occurs only in the direction of the axis. Marbach also discovered facets upon his crystals, resembling those of quartz. [4] It was late in the day when the Royal Society made him a foreign member. [5] These words were uttered at a time when the pythogenic theory was more in favour than it is now. [6] The work on _Diseases of Silkworms_ was dedicated to the Empress of the French. _RECOLLECTIONS OF CHILDHOOD AND YOUTH._ FIRST DISCOVERIES. 'Come, M. Pasteur! you must shake off the demon of idleness!' It was the night watcher of the College of Besançon, who invariably at four o'clock in the morning entered Pasteur's room and roused him with this vigorous salute, which was accompanied, when necessary, by a sound shaking. Pasteur was then eighteen years of age. In addition to his food and lodging, the royal college paid him twenty-four francs a month. But if his place was a modest one, it sufficed at the time for his ambition: it was the first tie which bound him to the University. 'Ah,' said his father to him frequently, 'if only you could become some day professor in the College of Arbois I should be the happiest man on earth.' Already, when he resided at Dôle, and when his son was not yet two years old, this father permitted himself to dream thus of the future. What would he have said had it been announced to him that fifty-eight years later, on the façade of the little house in the Rue des Tanneurs, would be placed, in the presence of his living son--laden with honours, laden with glory, passing in the midst of a triumphal procession along the paved town--a plate bearing these words in letters of gold: HERE WAS BORN LOUIS PASTEUR, _December 27, 1822._ Pausing before this house, Pasteur recalled the image of his father and mother--of those whom he called his dear departed ones--and from the far-off depths of his childhood came so many memories of affection, devotion, and paternal sacrifices that he burst into tears.