Ashtabula weekly telegraph. (Ashtabula, Ohio) 1880-1886, 1880-05-07
SCIENCE AND INDUSTRY.


THB addition Of teaspoonful Of
borax % a pint Of mixed starch win
prevent any inhammable goods from
blazing.
EDISON telephones have been installed
at the Pic du Midi observatory, in the
Pyrenees, and afford easy cOmmunica-
ton with Bagnere5, a distance Of fifteen
mikes. The first experiment failed, ow-
ing 10 the cloudy and stormy interven-
ing stratum Of air, but with improved
instruments every sound pronounced in
the ordinary conversational pitch is dis
tinctly audible.
RULE FoR ENeIEEERs.- "A Mr.. ROfer
gives the following rule for finding the
safe working pressure Of steam boilers
Multiply the thickness Of the iron, Sc II
single-riveted, and 20 II double-riveted I;
multiply this product by 10000 (safe
load) then divide the last prodAuct by
the external radius Cess thickness Of
iron); the quotient will be the safe
working pressure in pounds, per square
inch.
AFTIDOTE FOR INFECTIOUS DISEASES.
The benzOate Of soda has lately been
recommended as superior antiseptic in
all infections diseases; il acts very pow
erfully, and Il is claimed that daily
dose Of from thirty 70 fifty grains TO a
full grown man will render the poison
Of diphtheria imperative. The ben
zoate Is prepared by dissOlving crystal
lized ben2Oic acid in water, neutfaliz-
ing at a slight heat with a solu-
ton Of caustic soda, driving, and
fkaHa uNNraHrfHaaa Nhr ~anrrNg-~. -
tallize over sulpburic-acid under a
bell glass. Large doses are said not 10
appear absolutely. ecessary-good re-
suits may be obtained by the daily ad-
ministration Of about twelve grams.
FRENCH TREATMENT OF ASTHMA. ~
DR.. Evrard is said to have obtained very
satisfactory results in q severe case Of
asthma from the use Of a spray Of iodide
Of potassium. The patient, a man thirty
years Of age, had suffered for eight
months from daily attacks Of asthma,
and had also been subject 10 chronic
bronchitis for five years. At the time
the treatment began he had three or four
attacks day, and was reduced to pit
liable condition. After assiduous use Of
the spray for eight days the asthmatic
aNNtA1ho AtAAA dlAAfuoN euLlIEAN EEhAEus
Eighteen months have elapsed since
then, but the patient has continued 70
use the spray and the attacks have not
returned. The strength of the solution
used was one TO twenty.
EXPERIMENTS WITH SALICYLIC ACID.
In his many experiments with sali-
cylic acid, Prof KOlbe, OF Leipsic, has
found that rain or river water contain
ing one twenty-thousandth of a grain
thereof will keep sweet in warm room
four weeks OF more, while similar water
not so treated soon becomes unpleasant
to the taste. This was confirmed by an
experiment on large scale-that is,
water charged with one grain of sali-
cylic acid to twenty liters was placed on
board ship for years. voyage, and was
found sweet and free from organic mat
ter when, at the end of a voyage, the
casks were opened. Milk treated with
the acid remains sweet more than day
longer than without it. As a remedy
for rheumatism the usefulness of the
acid appears unquestiOnable.
OCCUPATIONS AND MORTALITY. .-Ac-
cording to the statistics of mortality in
Massachusetts, covering a period of more
than thirty years past, the average du
ration of life of various occupations
appears to be as follows: Gentlemen o
leisure 68 years, farmers &C, judges g.
lighthouse keepers 63, female nurses 90
basket makers 61, pilots 60, sections
ship carpenters, bankers and clergy
men 50, professors of colleges 81, law
yers 56, physicians 50, clock and watcl
makers, sheriffs and policemen 53
wharfngers and butchers 81, editors .
political papers Az, peddlers 46, artist
A, dressmakers 4S, druggists and dent
lists AZ, musicians and music teacher
Al, saloon keepers, tobacconists, print
ers, railroad agents and conductors 40
milliners, factory girls and domestics SO
/ glass blowers and powder mill opera
tives 38, clerks and bookkeepers SO
plumbers and carvers So.