The National tribune., 1898-02-17
PUZZLES HHD QUERIES.
Some Problems Which are Really
Worth While Working Out.
Answers. Second Series

| SOANS liOlh SOhltAdO asa w. S1dy ION, OTdQ
Rapids, Mich. Mr.. Slayton is in error in re-
gard to question 4, bit the others are an
swered correctly. Mr.. Harry T. Matthews
Kinsman, Ohio, sends answers to 1 and 10
The former is erroneous, but the latter is yer,
good. Mr.. Charles BrOokes, Box 126, Rhine
lander, Wis, sends answers to 90. 90 and 100
all OF which are correct. Mr.. J. w. Adams
BlairstOwn, y. j., sends an answer to No 8
/. The earth revOlves on its axes becauss
of its revolution around the sun. and from
east to west because Of the direction of thu
annual revolution Many years ago mounted
a large and a small wooden ball on piyots al
the opposite extremities of long arm, also
suspended on pivot at the place where il
would balance with the balls-the large ball
representing the sun, the small one the earth.
Upon turning it slowly for time | would
find each ball revolving on its axis in the
same direction They were revolving around
| the common center whichever way | turned
it, Hence the law. The direction of a
planets revolution around the sun deter
mines the direction of its revolution upon
its axis, provided that axis is not nearly
parallel to the plane of its orbit. Now
for the cause: That part Of the earth
which is farthest from the sun is moving in
an orbit l6, 900 miles greater in diameter
than the part toward the sun, and this at
the rate of over 100 miles per minute
2,oOo Tunes faster than an express train-thus
rendering greater centrifugal force in the
part most distant from the common center of
motion, and this causes the axal revolution
If the revolution around the sun were in the
direction of the hands of clock. the sun
would rise in the west and set i'm the east. -
Asa W. Slayton.
2 At the center of gravity of the earth,
supposed to be its center, ball. being at
tracted equally in all directions, would not
move the index of the spring balance from
zero If suspended from its hook, hence would
weigh nothing. But when placed in one pan
OF balance scale it would he exactly counter
balanced by an ounce weight, q pound weight,
20-pOund, 50-pOund, or ton weight. since
each of them would be equally attracted in
all directions hence on balance scale it
might be said to weigh one ounce, one pound,
20 pounds, or a tOn.-Asa w SlaytOn.
). The forms of continents are determined
by the directions of the lines of upheaval of
the earths crust AS the earth cooled it
slowly sfrunk, leaving the first formed, thin
crust too large for the nucleus within. and
this outer layer in settling down to fit
smaller sphere had to throw up folds or
wrinkles and these became the mountain
ranges. Now, if the earth had not been a
sphere, but a level or straight plane in every
direction, all it's shrinkage could have been
taken up by two sets of folds running paraI-
lei aad at right angles, and the continents
would have been rectangular in form. But
on sphere the folds must run in three direc-
uons to take up all the shrnkage, thus Civ
Ing the general form of {. tri rectangular tri-
angle to all large bodies of upheaval Try it
n haIi "a -, l.. II.
Asa w. SlaytOn. n.
4. There would he no difference in the
weight OF corkedotube containing fly.
whether the fly be perched on the side or fv-
ing. The balance records the total weight of
the whole system, lie, tube, cork. air and
fly, and 1t makes no difference in the weight
what the fly is doing;sf
D. 1t Is doubtful if there is any constant
for baking powder 1t should
be about two parts of bitartrate of potash
(cream of tartar and one part of carbonate or
blcarbonate of soda. But much Of alum,
starch, -four and other adulterants are used.
Asa W. Slayfon.
Baking powders always contain bicarb0nate
Of soda as the gas-gving constituent The
acid constituent is usually cream of tartar, as |
Mr Slayton says but it is frequently replaced |
IN whole or IN part by other acid bodies, such |
rs alum and acid phosphate. 1t also contains |
usually ~ per cent. OF starch, but this Is not |
an adulterant, since powders not containing
It will not keep Without the starch the |
'ther ingredients take mp enough moisture to
ict on one another.-Ed
6. Photogra hic dry plates are coated with
/ film of gelatin containing suspended silver
bromide. Usually there is also little silver
chloride and iodide a6lmixed.
7. /oetrope, wheel of life, is a cylinder of
oastehoard or tin. say, 10 inches diameter.
inches deep, slots one-fourth inch wide cut
1t intervals of about 3 inches from top half
way down. The lower half inside is oc-
upied by strip of paper bearing successive
pictures Of the same action taken at regular
interval. Revolve the upright cylinder,
ook through the slots, and we see n single
'icsnre, apparently, in motion. 1t illustrates
he retention OF images on the retina Asa
V. Slayton.
3. movable penny will roll around a
Xed one exactly two times. Asa W. Slayton.
This question was once debated for III nth5
n the hcfcHif American, and finally. there
sas al edition issued called the wheel number.
many diagrams to illustrate vari-
us theories. The problem so stated formerly
'as: How many revolutions on its own axis
'ill movable wheel make in passing once
round a fixed wheel Of the same diameter.
Its axis is so arranged as to be attached to
ne axis OF the fixed wheel, then it makes |
ut one, but If SO arranged as TO be fixed to |
ne frame OF the whole or points of compass,
hen 1t makes two-T. w. Adams.
g. A copper disk rotated between the poles
"A magnet meets with a resistance to motion
) if 1T were saving cheese If the magnet he
owerlul and the power applied great, the I
'slstance becomes quite large, and the disk
hot. '
10. Iodine is a chemical element, BLUSH !
ack, looks like IRON scales, is 1856 times I
'avier than water, melts at 1879 (C), boils {
l3O', giving off dense, violet vapor 1t is q
blamed from the ashes of sea weeds.-Asa C
z. Slayton.
The production Of iodine from ashes of sea- v
eed kelp') is notas great as formerly, v
the Chilian saltpeter beds yield it as u
'e-product. v
Iodine is peculiar Substance discovered Il
: Courtois, formerly manufacturer of salt C
ter In Paris. 1t is obtained from certain II
a-weeds or marine plants. 1t is incOm- Il
'stible, but, in combining with several e
dies, it exhibits the phenomena of COM II
siion; hence, it has BEEN considered a SUD- Il
rter OF combustion Like chlorine, it de- d
oys vegetable colors. but with less energy. III
color is blush black Or grayish- black of a
.taliic luster 1t is often in scales resem- n
NJ those of micaceous iron ore; sometimes ia
brilliant rhOmbOidal plates or in ELONGATED | OF