The National tribune. [volume] (Washington, D.C.) 1877-1917, 1898-02-03
PUZZLES And QUERIES. .
Some Problems (which are Really
Worth Willis Working Out.
Questions. tSecond Series.)

4
Questions. tSecond Series,
81 What is the cat,se of the tides on the
side of the earth ofIpos Sc the moon?
- Doe, the MisSxsssi pp run up hill u.
| ". Adams. 1sds
% is the ocean isTel2 And what is UNI
derstoJd by the wqsd " level . mechanic
ally :? } w Adauasrs
q. What is malt?
%. How is starch made from corn?
26. Fer what is ht7ie-t lack used :?
81. What is an. ortho, hromatic " dry
platesf 81 3
%. What is picricacid?
20. What is a diatoln?
80. Is there "a vertebrate with three eyes ?
Answers. FIRST series.)
Answers received to those questions in
issue of Dec. 80 numbered 81 to so, are as
follows: Kappa Kappa" Hawley, Mimi,
answers all except 81, 81 and Sc. The
answers, whcn are all correct, are very
clear and cone Sc. Asa w Slayton, Co j.,
18th Mich. answers all correctly. +. Nj. O..
Hinkie, Clifton, w. Va, answers So 81, 81
and 80 all correctly Harry r. Matthews,
kinSman o., answers correctly ST, ~ and
80. An answer to W is erroneous, stating
that graphite is " carburet of iron" Tn $
is Il statement found in old chemstr es.
founded on observat Ons on impure graph
lite. the pure mineral contains no non,
being com rosed of carbon.
Answers TO later Questions New Series,
), 6, and 10) have been received from NJ. a.
Stewart, Dover, \. H., all of which are cor
80, and 10O have been received from Asa W.
Slayton, Grand Rapids, Mich.
}. W. Adams, Biairstown, y. j., writes
that the question of the pennies NO 81
which is, as he suggests, the Scientific
American wheel que stion"-s should be
tat L hn fol
many revolutions on its own axis will a NOV
| able wheel make n passing once around II
| fixed wheel of the same diameter ~ He
also propoundS some questions, which ap-
| pear below.
81. The earth is 81 times heavier than
| the moon.-Asa ". SlaJton Grand Rapids,
Mich.
81 A corie is the unit of heat. It is the
amount requ red to raise one kilogram OF
water one degree centigrade, or from de
gree to dcgree.-Kapra Kappa.
So. An ohm is the unit Of electrical re-
Sstance. 1t is the resistance of a circuit
| in which potential difference of one volt
| PRODUCES a current of one ampere. 1t de
riyeS its name from the German eiectri-
| clan. Ohm.-Kappa Kappa. The last
standard, adopted n 1892, makes ii equal
the resistance of ii. 1921 grams of mercury,
1868 centimeterS in hight at centigrade.
Asa w Slayton.
81. The greatest distance between moon
and earth is 25l, 500 miles; least. 221 600 and
mean distance 10000 (authorS vary be-
tween 30 900 and $40, 0e0}.-Asa w. Stay
ton. In apogee it is 247 552 miles, VIII lie in
perigee it is 2lS,6o7 miles so that the
mean distance is 233 10i ? miles,. NJ.
G. HinlSle. The usually accepted figures
are; greatest distance, 252, o4S; least, 22l ),
533; mean, 238 ,8lS Fncyc Britannica, VOL
H., page GSt, edition Of 1873. Ed.
So. Graphite is natjve carbon OF black
color and metallic Iuster, and so soft as to
leave trace on paper. 1t IS used for
" lead y pencils, crueiDles, lubrication, etc
Kappa Kappa. 1t is of,en called black
lead" 1t is found al Tico aderoga, n. Y.
Stourbridge n. Y, and many other PAGES.
Asa ". S'ayton. Also in less quaint y
ard quail ty at Raleigh, \. c., and CumLer
land Hill, IL. Ed
SO. In heating a liquid, The particles at
the bottom OF the vessel become first
heated, expand and rise, while the colder
ones Sc lie TO the bottom, become heated,
and rise in their turn. These are convec-
ton curents.-Asa ". Slayton.
81. Methyl alcohol IS obtained from the
decomposition of hard wood when ex-
posed to intense heat with little or no
oxygen present LISA light, volatile liquid
closely resembling ordinary alcohol in all
its properties. 1t is used in the manufac-
tre Ian lin dyes, making varnish, and
for burning in lamps,gTiiarry Matthews.
~. All the waste parts---and perhaps the
better-of animals, especially beeves, are
treated by steam, extracting ali the fat.
Then the solid part, the stearin is mostly
crystaAized out, leaving "oleomargarine
oil, cons sting OF olen, palmitin and Il
little stearin. Oleomargar ne butter is
made by chiltning this oil with milk color
ing and sailing 10 taste.-Asa ". Slayton
The fat is melted at $50 degrees F., and then
run into chilling watts, where it is cooled
until most OF the stearin is crysaIized out.
II is thon thoroughly pressed 10 obtain the
'oleO oil. Leaf lard and cotton-seed oil
are used.-Harry T. Matthews.
So Granite is crystalline. unstratified
rock consisting OF quartz, fcldSpdr and
mica. 1t is usually whitish, grayish or
flesh red. Kappa Kappa. 1t is granular
in texture, the grains varying from pins
head 10 a mass of two or three feet, but
usually the l1rgest Size is that Of nut
Harry T. Matthews. An gneous rock com
posed OF mica, quartz and fe.dspar. Much
mica, poor grapite.-Asa w. Slayton.
80 The longest sea trip =" in "a straight
line which can be taken is one inch, per
hapS, since iii go ng one mile straight
ahead, the ne would bend 1872 inches to
keep to the curvature OF the ocean. But let
our" stra ght line mean the same point of
the comp IS, then from Cochin Oh ma east
hall point to the coast south of Panama.
hall the circumference Of the earth, or
II .4f9 m les. Next let the . straight line -
mean the arc OF great circle. and we start
from >hotsk. Siberia, sal nearly south
east varying to the east beyond New Yea
land then northeast near South Shetland
and run to the northeast corner OF the Gulf
OF Guinea. This distance is go degrees OF
the arc of great circle, or II ,29l m les. -
Asa w Stay Oh. Mr.. Slayton's point is
well taken.-Ed. Start at Shanghai China,
sal in q southeasterly direction, Just
touching Samoa and Cape Horn, and keep
goi n the same direction until around
the South Pole, though not very close to
ii, coming back by South Victoria, again
grazing Terra del Fuego but on the south
east side this time, and stop at IA seaport
in Guinea Africa. This makes Il long sea
trip with all kinds OF climate. Kappa
Kappa. The longest possible sea trip in a
S raight line is from Cape Horn to the
Islands of New Zcaland.-F. G.. M. Hinkle.