ow lived 0 3
The third sparrow lived 0 1
The water rose in the vessels eight lines during the life of the
first; four during the life of the second; and the third produced no
absorption.
Second.--In _vital_ air or _oxygen_, HOURS MIN.
The first sparrow lived 5 23
The second 2 10
The third 1 30
The fourth 1 10
The fifth 0 30
The sixth 0 47
The seventh 0 27
The eighth 0 30
The ninth 0 22
The tenth 0 21
The above experiments elicit the following conclusions:--1. That an
animal will live longer in vital than in atmospheric air.--2. That one
animal can live in air, in which another has died.--3. That,
independently of air, some respect must be had to the constitution of
the animal; for the sixth lived 47 minutes, the fifth only thirty.--4.
That there is either an absorption of air, or the production of a new
kind of air, which is absorbed by the water as it rises.
AMUSING EXPERIMENTS IN ELECTRICITY.
_The Animated Feather._
Electrify a smooth glass tube with a rubber, and hold a small feather
at a short distance from it. The feather will instantly fly to the
tube, and adhere to it for a short time; it will then fly off, and the
tube can never be brought close to the feather till it has touched the
side of the room, or some other body that communicates with the
ground. If, therefore, you take care to keep the tube between the
feather and the side of the room, you may drive it round to all parts
of the room without touching it; and, what is very remarkable, the
same side of the feather will be constantly opposite the tube.
While the feather is flying before the smooth tube, it will be
immediately attracted by an excited rough tube or a stick of wax, and
fly continually from one tube to the other, till the electricity of
both is discharged.
_The Candle lighted by Electricity._
Charge a small coated phial, whose knob is bent outwards so as to hang
a little over the body of the phial; then wrap some loose cotton over
the extremity of a long brass pin or wire, so as to stick moderately
fast to its substance. Next roll th
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