Lewiston teller. [volume] (Lewiston, North Idaho) 1878-1900, 1884-09-25
scTENTIFIC MISCELLANY.

Some interesting results have been
Welded by the inycsii -atCni tonctrEIn-
human growth which have been mad
by committee Of the British Associi-
ton for the Advancement Of ; Il nee. 1t
is shown that growth is most ralil during
the first FIVE years Of life, whan both
sexes grow alike. the buys bging litti'
taller and heavier than the girls. From
five to ten the boys gov a little tnsti
than the girls; but from ten to fifteen III
girls grow the faster, and betwd On the ages
of eleven and u half and fourteen and
half are actually taller thar the boy,
while from twelve and hall to fit en-
and half they are hcavi-r The boy,
then take the lead, growing at first RAJ ii
" but afterwards slower, anil complete
their growth at about the twenty-third
year; while girls grow very slowly after
fifteen, and reach their full stature nj
about the twentieth year. / Is general
" supposed that ''grown up people de-
not increase in hci -ht, but thes researches
appear to show that men gain slowly IN
statute until their fl,icth year, and they
make more rapid increase III weight up
to the aye of sixty. Statistics are too
Incomplete to determine the growth o!
women after the age Of twenty three.
Recent experiments On dogs have
shown that the hypodermic injection OF
solution Of theme, the active principle o!
tea, almost instantly countcracts the effect
Of morPhia, animals having been revived
after the action of the heart had ceased
to be pcrceptible. Similar properties are
possessed by caffeine, the active principle
Of coffee, but it operates less quickly.
Above London the water OF the Thames
Is found to hold in solution two cubic
inches Of oxygen gas per gallon, while
near the point where the city sewerage is
discharged it contains only about half II
cubic inch. A little lower down, hovee,s,cifr'
the river rec9yefsss- ly--,llss-Vfiginal pro
portion of oxygen.
The danger of tobacco smoking is man
:c..4oJ II. T,.;,cl; ,L;.., -, -. q, ,at
upon the action of the heart. During
series of observations he found that in
every case, varying according to the con
dition OF the individual, smoking produced
an accclcration of the pulse rate and
slight elevation Of temperature. Repre-
senting the temperature Of those who do
not smoke by 1000, that of moderate
smokers would be l,00S, and while the
heart in the former case was making
1900 pulsations, in the latter it would
beat $50 times.
Dotanists have evidence that trees may
attain very long lives. The age of an
elm has been estimated at 335 years;
that Of some palms, at from GOO to 700
years; that of an olive tree, at 100 years;
scf plane tree, at 720; of a cedar, at 500;
Of an oak, at 500; Of ytw, at 1850;
Of taxodium, at 1000; and of baobab
tree, at 5000 years.
In recent address, Mr.. Spence Bate,
+. r. S.. stated some interesting facts
, concerning the deterioration of teeth
noticed as we ascend the scale of animal
life, the inference being that teeth are
gradually evolved in brain matter, and
that with mans further increase in intel
lect may come the entire disappearance
Of his natural teeth.
The two tiny satellites Of Mars, which
were discovered by Prof Assph Hall in
1877, have diamcters Of less than ten
miles each, and are the smallest celestial
bodies known. The outer one-12, 900
miles from the planet---c,mpletcs reyo-
luton in its orbit in about thirty hours
in direction from west to east, and the
inner Moon--about $500 miles from the
planet-goes round in the same way in
about seven hours and half. Mars turns
on its axis in twenty -four and a half hours
from west to cast. Que moon therefore
travels slower than Mars and rises for
him in the east, while thu other outruns
him and comes up in the west
How can we, who are bcwildered and
appalled, by the fury Of our planets
cyclones and volcanic eruptions, form a
conception Of the terrible energy of natur-
al operations on the SUM Prof. New
comb suggests that if VIC call the solar
chromosphere an ocean Of fire, VIC must
remember that it is an ocean hotter than
the hercest furnace, and as deep as the
Atlantic is broad. If wa call its move
Nvsauts hprr,.a,,s ,,.o 49,. . 1 =, 1.