The workingman's advocate. [volume] (Chicago [Ill.]) 1864-1877, 1869-03-20
SCIENTIFIC NEWS.

THE Tools GREAT MES WORK WTH.-It
u not tools that make the workman,
but the trained skill and perseverance Of the
man himself. Indeed it il pr0verbill that
bad w0rkmen never vet had a good tool.
Some one asked The artist by what wonder
ful process be mixed bis colors 81 mix
them with my brains, sir" was his reply
II i the same with every workman VINO
would excel. Ferguson made Z wonderful
thiug-s1ch rs his wooden clock, that a.
curately measured the hours-hv means of
common pen knife, tool ID everyb0dy's
hand, but then everybody il not a Ferguson.
A pan Of water and two thermometers v Ere
the tools By which Dr.. Black discovered la-
tent heat; prism, a lens and sheet Of
paste board enabled Newton to unfold the
composition of light and the origin Of color
An eminent foreign SaUdnJ once called upon
DIR. Nollaston, and requested to be shown
over the laboratories, IN which science had
been enriched by so many important dis
0yeries, when the Doctor took him into a
little studio, and pointing to an old tea-tray
On the table, containing few watch glass
e., test papers, small balance, blow pine,
said t'There is all the laboratory have"
Stothard learned the art OF combining coll
ors by closely studying butLerhy's Aings.
He would often say that no one knew what
be owed to these tiny insects. burnt
stick and barn door served Wilkie ia lieu
Of pencil and canvass. Berwick first prac-
ticed drawing on the cottage walls Of Bis
native village, which be covered with bis
sketches in chalk /; and Benjamin West made
bis first brushes out Of the CATS tail. Fer
gusou laid himself down in the fields az
night in blanket and made map Of the
heavenly bodies bY means Of a thread with
small beads on il, stretched between his eyes
and the stars. Franklin first robbed the
thunder cloud " y. tightening By means Of
a kite made with two cross sticks and a silk
handkerchief. Watts made bis FIRST model
OF tue condensed steam engine out 81 az Old
anatomisPs syringe, used to ID ieos the arte-
ries previous 10 dissection. GI4ord worked
his first problem in mathematics, when a
cobbler's apprentice, upon small scraps Of
leather, which be beat smooth for the pdr-
pose; while Rittenh0use the astronomer.
first calculated the eclipses on his plough
handles.
EFFEcT or COLD TPoN METALs
Of st. Petersburg, has recently c0mmuni-
Gated to the Academy Of Science, at Paris.
a notice Of remarkable change produced
III.
During the previous winter, TIN, ex posed ID
81. Petersburg to temperature Of forty De-
grees below zero, was transformed into A
hbrons semi-crystalline substance, which be-
came divided up into columnar fragments
like basait, and in which empty spaces were
formed By she very great contraction Of the
metal. This took place in mass Of Tin
weighing forty or City pounds, and about
twenty-five inches in diameter.
In the course o. the discussion which en-
sued upon this statement, ii was mentioned
that the organ pipes Of a church 10 Russia
bad become 50 much changed BY frost as 20
have lost their sonOrous qualities. Ii was
also stated that frozen quicksilver presented
similar appearance to the tin. A temper
allure Of one hundred degrees below zero
does not produce the same appearance as
fory degrees below that point. IN the form
eF case the tone and consistence Of the met
al resembled that Of silver Attention was
also called to the fact that iron car aries
became very brittle BY frost and that mnpv
other metals at very high degrees Of cold
would probably experience the same moiec-
ular changes as were shown to occur in tin.
WONDERS on THE MICROSCOPES ex-
coed even those of the Telescope. Il shows
us bow two thousand millions Of animals. Of
perfect and most delicate organization could
live and move in drop of water. Exten-
slye geological formations, covering hun
dreds of n,....cs exteLt, were constructed out
OF the fossil remains OF organized animals.
whose existence had been unknown to mar.
except for this instrument. In questions 90
medical jurisprudence the information fn,-
nished ~ the microscope was often dsai-
sIve. IL tells us whether the blood fOane
on the knife of suspected murderer il that
Of human being or not, and enables IA Ia
sometimes detect tie part of the bodx which
the blade entered, by an ANALYSIS az aha II.
cretions which adhere to it. In the detec. |
ton OF poisous, drugs, groceries. and the
like, il is also invaluable. The quality az |
the supplies furnished to the United States /
army was ascertained thro' the mid Of ~ /
and en~oled the Government "a |
detect imposition.
THE Solar Engine, invented BY French
man named Mouchot, it il reported. has ]
proved successful. The apparatus is de-
scribed ne follows A concaye reflector In 4
used TO concentrate the sunshine on boiler
1lackened with smoke, and it is computed
hat in the latitude Of Paris the heat reflect L
d from surface Of q square metre, or 1G.-
% square feet, will make quart OF water.
AIKEN at the freezing point, boil Ia ten min
tics By the same calculation, It is assert
p. that 40 area Of 100 square metres will
urnish as much heat in ten hours As can be
'et from burning sixty pounds OF coal. In
ropical regions, il is believed, the amount
EOuld be sui greater.
A SPANISH TRAFs-ATLASTIc CABLE.-The 4
'pa1isn Consul General has announced thar /
snders for submarine cable between the !.
'lands Of Cn6as or Porto Rico. Canaries.
nd the coast 81 Spain In the port Of dndix.
: les neiRhborhood, will be received as shs
onsul 00acf (Ministerio de plsramar,) Md