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The fundamental ground for Agassiz's rejection of it is stated by himself in one of the lectures delivered at Cambridge, as follows: "I believe that all these correspondences between the different aspects of animal life are the manifestations of mind acting consciously with intention towards one object from beginning to end.

Mahir, whose name occurs often in the letters of this period, was another college friend and fellow-student, though seemingly Agassiz's senior in standing, if not in years, for he gave him private instruction in mathematics, and also assisted him in his medical studies. MUNICH, November 20, 1827.

Next to Alexander Braun, Agassiz's most congenial companion at Heidelberg was Karl Schimper, a friend of Braun, and like him a young botanist of brilliant promise. The three soon became inseparable. Agassiz had many friends and companions at the university beside those who, on account of their influence upon his after life, are mentioned here.

Agassiz's account of the mode in which he sought for the natural boundaries of the various divisions, by observing the special point of view in which various eminent naturalists have considered their subject; as, for instance, Audubon, among the biographers of species, Latreille, among the students of genera, and Cuvier, at the head of those who have contemplated the higher groups, such as classes and types.

Burkhardt became a permanent member of Agassiz's household, accompanied him on his journeys, and remained with him in relations of uninterrupted and affectionate regard till his own death in 1867. He was a loyal friend and a warm-hearted man, with a thread of humor running through his dry good sense, which made him a very amusing and attractive companion.

Ehrenberg also, at a later period, announced another division under two heads, those with a continuous solid nervous centre, and those with merely scattered nervous swellings. For more details upon the different systems of Zoölogy, see Agassiz's Essay on Classification in his Contributions to the Natural History of the United States, Vol.

The next letter contains Agassiz's answer to Dr. Leuckart's questions concerning the eggs he had sent him, and some farther account of his own observations upon them. NEUCHATEL, June 20, 1827. . . .Now you shall hear what I know of the "Hebammen Krote."

The tide was just on the flood, and all the conditions favorable for her run to her first anchorage in the Strait at Possession Bay. Here the working force divided, to form two shore parties, one of which, under Agassiz's direction, the reader may follow.

Newton's "Principia" means that at last stars and suns have broken into voice. Agassiz's zoölogy causes each youth to be a veritable Noah, to whom it is given to behold all insects and beasts and birds going two by two into the world's great ark.

The whole group of haemulons was thus brought in review; and, whether engaged upon the dissection of the internal organs, the preparation and examination of the bony frame-work, or the description of the various parts, Agassiz's training in the method of observing facts and their orderly arrangement was ever accompanied by the urgent exhortation not to be content with them.