In 1858 the French Government devoted itself, with extreme solicitude, to the reorganization of the administration of the Museum of Natural History of the _Jardin des Plantes_ at Paris. It appears that, in spite of a first refusal, several times repeated, Agassiz at length consented to accept the direction of the museum. The Emperor, who had formed a personal acquaintance with the celebrated naturalist during his sojourn in Switzerland, pursued with customary pertinacity his favorite idea of alluring M. Agassiz to Paris. He was offered a salary of twenty-five thousand francs; and it was understood he was promised, besides, elevation to the dignity of senator, of which the appointments were worth twenty-five thousand francs more. I have thought it fitting to give Agassiz's own report of his first introduction to an American public: "When I came to Boston," said he, "the first course which I gave had five thousand auditors, and I was obliged to divide them into two sections of twenty-five hundred each, and to repeat each lesson. This course was given in the large hall of the Tremont Temple." "Do you think," he was asked, "that in such a crowd it was the fashion or the desire for instruction which dominated?" "No doubt," he replied, "it was a serious desire for instruction. I have plenty of proofs of it coming from persons belonging to the lower classes. For instance, it is usual here to accord to persons who go out to service full liberty after a certain hour in the evening, solely to go to the course of lectures; that is made a part of the agreement. A lady who had a very strong desire to hear me, told me that it was impossible for her to do so. Her cook was the first informed of my announcement, took the initiative, and obtained her promise of liberty for the hour of the evening when I taught, and left her mistress to take care of the house alone. On her return she explained very clearly what I had said."