Port Tobacco times, and Charles County advertiser. (Port Tobacco, Md.) 1845-1898, 1851-08-06
TIE SCIENTIFIC MAGNET.
BY WM. GLAND BOURNE.

The human brain averages IN weight l.
35 of The body-about two pounds and a
, half; that Of the dog, ll20th that Of the
, horse, 1450th; of the sheep, 1-75Osh; Of
the OK, 1-S00th.
, The proportion of the brain to the spinal
: cord, is the lowest in fish, two to one in
reptiles, two and half to one in birds,
three to one; in animals, four to one in
: man, the highest of all created beings it is
as twenty-three to one.
The bones of birds are hollow and filled
with air instead of marrow.
man is taller in the morning, by half
an inch, than he is at night. An acquain-
Lance with this fac, led TO cunning expedi-
ent on the part Of some soldiers in an Eng
Ish army. The regulations requiring ,ha,
none but soldiers who measured six feet
should be admitted into certain regiment,
number who fell trihe short Of the re-
Iqufed stature, went early in the morning
to be measured. when they were found to
be Of the heigh, required.
1t is estimated that thirty thousand mil
lions Of human beings have perished in war
There fell at the battle Of AusterlitZ, 10000;
Dresden, 10000: Waterloo, 40 900; Bylan,
$4,000; Borodino, $4,000; Isus, 10000 :;
Cannae, S0,000; Arbel, 100000; in the
Siege Of Jerusalem over 100000; and a,
Troy. 100000. In the Russian Campaign,
100000; during twelve years of the recent
wars in Europe, no less than 5,S00,O00.-
The army Of Xerxes, which numbered at
one time 100000, was reduced 10 few
thousands. Jenghis Khan butchered in the
DrOynce of Uerat 1600O00
In 1913, the mines of Russia produced
1896 poods of gold, worth G3,944 $50. or
| Sl9,600,0O0. Of silver, 1872 poods, worth
/ 1fISS,0O0. The pools is abou. 36 pounds
avordupois.
DR.. Scoresby, states as HE result Of his
investigations, that the highest waves of the
Atlantic averages 25 feet; the mean distance
between each wave, $50 feet width, from
crest to crest, 600 feet interval of time be-
tween each wave, l6 seconds; velocity 80
and half miles an hour
1 MeIgher German, collected and descr;b-
ed 600 species Of flies from circle of coun-
try ten miles in circumference. There have
been collected in Europe $4,000 species Of
insects preYlng on wheat.
| The longest day at Berlin and London is
sixteen hours and half; at Stockholm,
eighteen hours and a half a, Hhmsburg the
longest day has seventeen hours, and the
shortest seven; ; al ST. Petersburg, the long
es. day has nineteen hours, and the short
est five; at Tornea, in Finland, the longest
days has twen,y-one hours and half, and
the shortest two hours and half; at Spilz-
bergen the longest day is three months and
half.
If piece of wood be forced a great depth
in the sea, the pressure will force the wa
ter into the pores Of the wood and will in
crease It's weight so much that it will sink
like stone. For the same reason It's pos
sible that there is depth below in which
fishes cannot exist.
An Irish mile is 2,2lO yards ; Scotch, l.
9S4; German, $500; Turkish, LISP.
The surface of the earth contains l9O,-
100000 of square miles, of which 100000
900 or little more than three -fourhs are
covered by water. The greatest depth is
computed to be about equal to the height of
the highest mountains-6ve miles
The great coal field of the Mississippi
valley covers an area Of &c, 900 square miles,
or 44,S0O,O0O square acres. This is six
times the area of all the coal fields of Great
| Britain.
There are over 600 species of naamma7ia,
or animals that suckle their young; 1000
species of birds; 5000 species Of fishes
700 species Of reptiles and 11,000 species
Of insects. Fi(ty-six thousand species of
plants have been determined, while the num-
| Der of species in all the orders and genera
are still greater, thousands of which have
not yet been determined.
The COW eats 276 species Of plants, and
rejects III: the horse eats 2G2 and rejects
2l2; the hog eats only IS, and rejects all
the rest.
The immense numbers of some species
are astonishing. Captain Flinders, in his
voyage 10 Australasia, saw compact stream
of stormy perels, SO to 50 yards deep and
800 broad. They continued to fly past the
ship an hour and half Allowing nine
cubic inches Of space to each bird, at a We
loclly OF 80 miles an hour, they would num-
Der $50 millions.
/, Wilson, in his American Ornithology, CAL
culases the number of flock of pigeons.
| flock one mile in breadth, (below the
truth,) moved four hours at 60 miles an hour,
or 21O miles. He allows three pigeons to
each square yard, which would give 1880
$4,000, two billions two hundred and thir-
+ ty million two hundred and seventy-,w
thousand.
The golden eagle flies 40 miles an hour,
pigeons from 40 to 60, the swift at abou, the
same speed
There are 245 bones in the human body.
i, The skull is composed Of 10 bones, and
81 in the face; the head thus has 81 ; in
5 the trunk, "a, arms and hands, 60; legs anJ
feet, CO.