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They look like railway-embankments crossing the low ground, and serve as dykes when there is a flood, a casualty which still often happens. This change is interesting to the student of physical geography; and Humboldt's account of the causes which have brought it about is full and explicit.

As the journal of a scientific traveller it is second only to Humboldt's Narrative; as a work of general interest, perhaps superior to it. He is an ardent admirer and most able supporter of Mr. Lyell's views. His style of writing I very much admire, so free from all labour, or egotism, yet so full of interest and original thought."

It is well that Humboldt's advice was not heeded in this regard. Nevertheless he was a wise counsellor. He saw the danger into which his young friend's enthusiasm and boundless appetite for work was likely to lead him. For Agassiz it might be said, with a variation of the well-known adage, that there was nothing he touched that he did not aggrandize.

Without the cells you get no mind, and if mind exists without the cells, it has not yet been proven. The brain is a storage-battery made up of millions of minute cells. The weight of an average man's brain is forty-nine ounces. Now, Humboldt's brain weighed fifty-six ounces, and Newton's and Franklin's weighed fifty-seven.

Then the stranger suddenly disappeared, and Liebig, with the painful feeling of being considered a very uncivil fellow, was obliged to let the Thursday pass without accepting the invitation so important to him. But on Saturday some one knocked at the door of his modest little room and introduced himself as Alexander von Humboldt's valet.

And he adds: "What we no longer see is not necessarily annihilation," repeating at the same time the question of Pliny "StellA| an obirent nascerenturve?" They are among Humboldt's smaller "fissures or chasms in the heavens," in which he asserts that there is a great paucity of stars, or none at all.

See Humboldt's interesting discussion on this plant, which it appears was unknown in Mexico, in Polit. Essay on New Spain, book iv. chap. ix. By sweeping with my insect-net, I procured from these situations a considerable number of minute insects, of the family of Staphylinidae, and others allied to Pselaphus, and minute Hymenoptera.

This learned work contains the result of Humboldt's astronomical and trigonometrical observations on the lunar distances, the eclipses of the satellites of Jupiter, the transit of Mercury, and upwards of five hundred elevated points in the New World, taken from barometrical observations, with all the requisite allowances and calculations carefully made.

I had asked the same question of Professor Bond, of Cambridge, and he had replied, 'Give me $500,000, and we can do it; but it is very expensive. "Humboldt spoke of the fifty-three small planets, and gave his opinion that they could not be grouped together; that there was no apparent connection. "Having lost all his teeth, Humboldt's articulation was indistinct he talked very rapidly.

But Humboldt's isothermal lines for the first time gave tangibility to these ideas, and made practicable a truly scientific study of comparative climatology.