The Black range. (Robinson, Socorro County, N.M.) 1882-1897, 1886-12-03
Scientific and Uuseful Notes.

sale passage Tor infantry OF horses
marching In sirgle file. and for light
carriages; with a thickness of six
inches IL will bear all sorts Of wagons
aud eannons.
A reputable scientific authority quo
ties the statement that, by careful esti
mate. spider ate four times Its weight
for breakfast. nearly nine times its
weight for dinner. thirteen times IL
weight for supper. finishing up an
ounce. and at y. IN. when he was re-
leased. ian of In search for food. At
this rate man Of 100 pounds would
require the whole of "A fat Of steer
for breakfast. another with q half.doz.
en- good sheep for dinner. and two hull
locks, eight sheep and four hogs for
supper. with about tour barrels of
fires hsh rs lunch before goiug to his
club banquet.
The type writer, now in such com.
mon use. dates back to I7l4. when
Henry Mill got patent for II IN Eng
land; but IL was not really made prac-
ticable until 1867. 1t now seems IN.
dspensable.
IL is admitted that In the act Of
growing q bird stretches his meek to its
full extent. A small lath. loosely sus-
pended about eighteen inches above
the perch, will obyiate tins. Ii in no
way interferes with the binds rOostihg
but the moment chanticleer contem-
plates "A nuisance the swinging lath
comes gently IN contact with bis comb
and effectually stops him.
Prof. ID. 7. Penhollow. having studi.
ed the relation of annual rings 10 the
age of trees, concludes that the for
nation of rings Of growth is chiefly
determined by whatever operates to
produce alternating periods of physio-
ogical rest and activity. In cold c!l-
mates the rings are AN approximity
correct, but not always certain, index
of age; but in warm climates they are
OF little or no value in this respect
The influence Of the meteorological
condition In determining the growth
of each season Is inost important, par
ticularly with reference 10 rainfall.
Periodicity in rainfall corresI onds
with peroGicity IN growth.
II has long been a question of doubt
as to how far beneath the surface the
roll of the ocean could be felt; but it
has been generally supposed that the
action of the waves does not extend
more than sixty or eighty ieet below
the surface. The fact, however, has
recently been discovered that tue wave
motion extends to very much greater
depth. A diver at work on the steam.
er Oregon. recently sunk near New
York harbor, at depth of l2O feet,
found the roll of the sea SO heavy that
he could not keep his position while
making fast to trunk which lie was
To hoist up.
The power exerted by an explosion
on surrounding objects is in the in
verse ratio of the cube of the distance
from the point of the explosion. Thus.
at 100 feet from the exact point of an
explosion. the power is only the cube
of 1.l00. or IL, 100000 part, of what Is at
d distance OF only one foot from that
point. or, in other wordn, If the power
at one foot from the spot be represent
ed by 100000, at the distance of 100
feet ii will be but one. 1t is thus seen
that the effects are intensely local, but
not comparatively trlhing ut even
short distances. Nytro-glycerine and
dynamite do not, when exploded. ex-
ert such force as is popularity believed.
To speak precisely, the power develop
ed by the explosion of ton Of dyna-
mite Is equal to 45,675 foot tons. One
ton of nltro-glycerine similarly ex-
ploded will exert a power of 64,452 foot
tons: and one ton Of blasting gelatime
similarly exploded 7l,050 tons. These
figures. although large, are not enor.
nous, and need not exc te terror. Sew
enty-one thousand tons of ordinary
building stone, II arranged in the form
Of II cube. would only measure ninety
feet on the side. and II it were possible
to concentrate the whole force of ton
of blasting gelatine at the moment of
explosion on such mass, the only ef-
feet would be to lift 1t tn the height of