lossom nearly at the same
time. Surround them with earth; and then tying together the two bits
of wood, plant the whole in a pot filled with earth, properly
prepared.

_A Luminous Bottle, which will show the Hour on a Watch in the Dark._

Throw a bit of phosphorus, of the size of a pea, into a long glass
phial, and pour boiling oil carefully over it, till the phial is
one-third filled. The phial must be carefully corked, and when used
should be unstopped, to admit the external air, and closed again. The
empty space of the phial will then appear luminous, and give as much
light as an ordinary lamp. Each time that the light disappears, on
removing the stopper it will instantly re-appear. In cold weather the
bottle should be warmed in the hands before the stopper is removed. A
phial thus prepared may be used every night for six months.

_To make Luminous Writing in the Dark._

Fix a small piece of solid phosphorus in a quill, and write with it
upon paper; if the paper be carried into a dark room, the writing will
appear beautifully luminous.

_The Sublimated Tree._

Into a large glass jar inverted upon a flat brick tile, and containing
near its top a branch of fresh rosemary, or any other such shrub,
moistened with water, introduce a flat thick piece of heated iron, on
which place some gum benzoin, in gross powder. The benzoin, in
consequence of the heat, will be separated, and ascend in white fumes,
which will at length condense, and form a most beautiful appearance
upon the leaves of the vegetable.

_Easy and curious Methods of foretelling Rainy or Fine Weather._

If a line be made of good whipcord, that is well dried, and a plummet
affixed to the end of it, and then hung against a wainscot, and a line
drawn under it, exactly where the plummet reaches, in very moderate
weather it will be found to rise above it before rain, and to sink
below when the weather is likely to become fair. But the best
instrument of all, is a good pair of scales, in one of which let there
be a brass weight of a pound, and in the other a pound of salt, or of
saltpetre, well dried; a stand being placed under the scale, so as to
hinder it falling too low. When it is inclined to rain, the salt will
swell, and sink the scale: when the weather is growing fair, the brass
weight will regain its ascendancy.

_Contrivance for a Watch Lamp, perfectly safe, which will show the
Hour of the Night, without any trouble, to a person lying i