440 
will shew, that the water in the Cattegat is, 
in our days, slowly increasing in height, 
and the Baltic may, ina still slower degree, 
be increasing its height also, for any thing 
satisfactory which has yet been advanced 
to the contrary. The subject is an interest- 
ing one, and we invite the communication 
of well-attested facts, or good observations, 
which bear upon it. 
That the Salmon may be naturalized as a 
Fresh-water Fish, has been inferred by Mr. 
N. Mill, who, at the period when the fry of 
the salmon were retreating to the sea, 
caught a good many of them, which mea- 
sured about four inches in length, and put 
them immediately into a fish-pond, about 
thirty yards square, and three to four feet 
deep, with a clay bottom, supplied by a 
stream of water; and about twelve months 
afterwards he found there young salmon 
eight inches long, and apparently healthy, 
though lean: indicating, that in more 
ample watefs, where they may range at 
large, and procure that food and situation 
most congenial to their habits, they would 
attain their natural size. 
The Destruction of Insects prejudicial to 
gardens, has been accomplished, by freely 
using the following mixture as a wash for 
the stems and branches of plants, in open 
weather, in January or February, viz. 
Tobacco leaves cut small, are infused in 
hot water, but not boiled, which would 
dissipate the essential oil; in the infusion 
gum arabic is dissolved, and the flour of 
sulphur intimately mixed therein. This 
has also been found a valuable pickle for 
seed wheat. 
An Hydrometer for examining the Urine of 
diabetic and other patients, the stem of 
which is divided, so as to indicate the 
known stages and degrees of disease, has 
been contrived by Dr. W. Prout, and 
deseribed and engraved in the “ Annals of 
Philosophy,” No. 53, the use of which in- 
strument, cannot fail to be useful in the 
medical profession. 
Voluntary Breathing may be made to 
quicken the Pulse, and increase Animal 
Heat.— According to the experience of a 
writer in the “ American Journal of Sci- 
ence,’ in cases where the lungs become 
unusually torpid, and the breathing feeble 
and languid, through deep thought, or 
through mental vacuity, or other cause 
not connected with disease; if the resp- 
ration. be designedly increased both in 
frequency and degree, a quicker circulation 
of the blood, and an increased activity of 
the animal spirits, will immediately follow. 
The writer hereof has long known and 
practised this mode of speedily acquiring 
warmth, on getting into a cold bed; in 
which he has no sooner been covered up, 
than twelve or fifteen deep and quick in- 
spirations of the atmospheric air, not too 
dnickly again expelled each time from the 
Spirit of Philosophical Discovery. 
[June 1, 
lungs,* has induced a slow and natural 
warmth, incomparably more pleasant and 
wholesome than any heat from a warming- 
pan can impart. In bad weather, or when 
other circumstances have not admitted of 
taking brisk exercise abroad, often-repeat- 
ed and deep inspirations, and letting the 
air remain its full time in the Jungs, whilst 
pacing, in quick time, the passage of his 
house, has often appeared to the writer to 
convey every benefit of a walk abroad, 
then either impracticable, or which would 
have consumed valuable time—that pre- 
cious thing, of which intelligent and think- 
ing men haye the most need to be econo- 
mic. Has not the power of the will, to a 
certain extent, over the muscular action 
of the lungs, been too much ‘overlooked 
amongst curative means? Might not a 
purposely-subdued breathing, in the early 
stages of fever, materially contribute to 
arrest the progress of the disease ? 
The Temperature of the Carcases of newly- 
killed Animals was, on sixteen different oc- 
casions, noticed by Captain Lyon, during 
the severity of the Arctic winter of 1821-2 : 
the greatest heat observed, that of a fox, 
was 1068° of Fahrenheit, when the sur- 
rounding air was —14°; and the least heat 
98°, of a fox also, when the air was —10°; 
the mean of the whole, viz. fourteen Arctic 
foxes, a white hare, and a wolf, giving 102° 
as the heat there of a carcase immediately 
after death ; and —193°, or 513° below 
freezing, the mean heat of the surrounding 
air when the experiments were made— 
Parry’s 2d Voyage, \st Edit.p. 157. 
The Atomic Theory, according to the 
peculiar views of definite proportions en- 
tertained by the celebrated Swedish che- 
mist M, Berzelius, and, in particular, the 
notation by which he forms a symbol for 
denoting each compound substance, haying 
hitherto been but little known in this 
country; Mr. J. G. Children has per- 
formed a useful service to chemical and 
mineralogical science, by inserting a fully 
explanatory memoir on the subject, in Nos. 
5] to 54 0f the “ Annals of Philosophy.” 
The Colouring Matter extracted from Red 
Cabbage-leaves may be preserved, as a che- 
mical test, fer years; if the leaves be di- 
gested in warm alcohol, the latter distilled 
off from the solution, and watery evapora- 
tion continued in a gentle heat, until the 
extract be reduced to a syrup. This may, 
be preserved in well-stopped phials for 
years; and, when wanted, this syrup may 
be diluted with water to the proper inten- 
sity of colour. From ‘the alcoholic solu- 
tion-test, papers may also be prepared.— 
Silliman’s Jour. 
« 
Oe 
* In very cold weather, if the inspirations are 
drawn from the air of the bed-room, and the expira- 
tions of warm air from the lungs are made under 
the bed-clothes, the acquirement of a comfortable’ 
warmth is the sooner effected, } oinjeiu 
