called _Morocco_ leather. These are the principal varieties of leather
employed in this country.--_Brande's Lectures--Lancet_.


_Mites_.

An indefatigable naturalist has undertaken the very difficult task
of arranging the family of _acarides_, or mites; he divides them into
sixty-nine genera, the greater part of them new!


_Electro-Attraction of Leaves_.

The results of a French experimentalist have lately led him to conclude
that the leaves, hairs, and thorns of plants tend to maintain in them
the requisite proportion of electricity; and, by drawing off from the
atmosphere what is superabundant, they also act in some measure as
thunder-rods.


_Enormous Whale_.

The skeleton of a whale, 95 feet long by 18 feet high, has lately been
deposited in the Cabinet of Natural History at Ghent. In the opinion of
many naturalists, among whom is M. Cuvier, this fish could not have been
less than 900 or 1,000 years old!


_Fly in Wheat_.