_DRY ROT._

The American Commodore Barron recommends pumping air from the holds of
vessels as a remedy against dry rot; the common mode of ventilation,
by forcing pure air, or dashing water into the hold, being found an
imperfect preservative.


_ALLOYED IRON PLATE._

Iron, coated with an alloy of tin and lead, so as to imitate tin
plate, and not to rust, is now manufactured to a considerable
extent in Paris; and its use for sugar-pans and boilers, and in the
construction of roofs and gutters is expected to be very considerable.


_INTERESTING QUESTION._

Whether in the sea there be depths where no creature is able to
live, or whether a boundary be assigned to organic life within those
depths, cannot be ascertained. It, however, clearly appears from
the observations made by Biot, and other naturalists, that fishes,
according to their different dispositions, live in different depths of
the ocean.--_From the German_.


_CATS._

In Kamtschatka, Greenland, Lapland, and Iceland, there are no cats,
nor does the lynx in Europe extend farther than Norway.--Ibid.