began to stumble, loud was the laughter, which is not in good taste,
not even in Germans. And if there was always a full audience to
honour the Liedenbrock courses, I should be sorry to conjecture how
many came to make merry at my uncle's expense.

Nevertheless my good uncle was a man of deep learning--a fact I am
most anxious to assert and reassert. Sometimes he might irretrievably
injure a specimen by his too great ardour in handling it; but still
he united the genius of a true geologist with the keen eye of the
mineralogist. Armed with his hammer, his steel pointer, his magnetic
needles, his blowpipe, and his bottle of nitric acid, he was a
powerful man of science. He would refer any mineral to its proper
place among the six hundred [l] elementary substances now enumerated,
by its fracture, its appearance, its hardness, its fusibility, its
sonorousness, its smell, and its taste.

The name of Liedenbrock was honourably mentioned in colleges and
learned societies. Humphry Davy, [2] Humboldt, Captain Sir John
Franklin, General Sabine, never failed to call upon him on their way
through Hamburg. Becquerel, Ebelman, Brewster, Dumas, Milne-Edwards,
Saint-Claire-Deville frequently consulted him upon the most difficult
problems in chemistry, a science which was indebted to him for
considerable discoveries, for in 1853 there had appeared at Leipzig
an imposing folio by Otto Liedenbrock, entitled, "A Treatise upon
Transcendental Chemistry," with plates; a work, however, which failed
to cover its expenses.

To all these titles to honour let me add that my uncle was the
curator of the museum of mineralogy formed by M. Struve, the Russian
ambassador; a most valuable collection, the fame of which is European.