Sacramento daily record-union., 1888-09-22
POPULAR SCIENCE.

besSemers steel patents have brought
him S35, 5,3S5,0oo on royalties.
An estimate places the number of per-
sons supported by all forms of employment
furnished by electricity at 100000.
1t has been decided that no theater in
Madrid will be allowed to open its doors
next winter unless it shall be lighted by
electricity.
The luminosity Of phosphorus is i'm
paired by dense and increased by rare
fed atmosphere. At a pressure of sixty
pounds to the square inch, or four atmos-
pheres, phosphorus is non-luminous.
According to MunhalFs dictionary of
statistics the average age of all the people
living in France is 30 years, months and
L days. In the United States the average
is only "a years, 10 months and "a days.
Sheet-steel is now copper-plated on both
sides by electro-deposition and used as
sheet-coppeT. The sheet is decarbonized
steel, and one of the copper sides is timed.
The new material is manufactured at
Pittsburg, Pennsylvania.
Glass-blowing is an art nearly 1000
years old, perhaps older; yet there has
| never been any device discovered to take
the place of the human lungs in the blow
ing. Bottles, however, are blown with
mold, and mechanical bellows.
Bulk-windows that are cased up from
the main store may be kept free from steam
and frost byEa small door or pane of glass
that will swing open near the top of the
| window, so as to let hot air near the top
| escape, and the cold air from out doors will
go in and keep the glass clean.
A new organ, called an orgue electrique,
has been placed in the Church of Sainte
Clotilde, in the Faubourg Saint Germain.
1t IS the first instrument of the kind that
has appeared in a Paris church. The ac-
cumulators are placed behind the high
altar, whence the wires are connected
with the keyboards and the organ pipes.
The value of condiments in the prepara-
| ton of food is being discussed. Author
tiles that may be considered reliable assert
that red pepper and salt are specially
valuable as aids to appetite and digestion.
Various herbs and spices are also good,
while all the condiments used in salads
promote digestion and the assimilation of
| food.
Belts conveying power are very apt to
slip on pulleys, but new pulley has been
devised to prevent this. The pulley is
covered with perforated sheet-iron one-six-
teenth of an inch thick, which is riyeted
to the pulley. The tension on the belt
causes it to slightly grip the holes, and
thus slipping is avoided, while at the same
time the pulley is strengthened.
Extended observations at Paris and at
Munich indicate that the sanitary condi-
tions of locality depends on the amount
of water contained in the ground. The
years in which there has been a large
quantity of ground-water present have in
variably been the healthiest, while those
in which there has been a smaller guam
tity have invariably been the unhealthiest
The apparent paradox that the most
transparent water is at the same time per-
fectly Opaque from certain point of view
is shown by simple experiment. Partly
fill glass goblet with clear water and
hold it little above the level of the eye
and distant foot or more. No object can
be seen when held just over the surface Of
the water, but the water surface appears
like FURNISHED mirror.
| Messrs. Woodhouse and Rawson have
lately introduced new form of carbon for
microphones, which is sufficiently hard te
scratch glass and is extremely homogene.
Gus. 1t is, moreover, uninhuenced by the
state of the atmosphere. This carbon is
said to be much superior to that no5 EN-
ployed in the Blake telephone, and 20 be
particularly suited to long distance tel
ephony.
Russian observations have shoysn tina
teeth decay in quite regular c-der, the
lower third molar being the first attacked
then the upper, then the lower fourth mo
lar and so on, the lower incisors and ca
nine teeth being the last affected. Uppe
teeth, as rule, are more durable tha,
lower, right than left, those Of dark pei
sons than those of blondes, hose of shoi
persons than those of tall.
The bacillus of whooping cough is tn
5 latest arrival. 1t differs from othes ba,
terra, but is somewhat Ike Friedlander
: pneumonia bacillus. IN, Afansieif, th
. discoverer, detected tae bacillus in th
E spatum of his own aad other ehildrel
e That was stained with methyl-yiolet, ar
# the bacilG were detected in the pus corpu
+ cles with magrrying power of 700-l0t
y ON lip oil immersion objective.
ot Oxygen was discovered by Priestly,
Y England, and Scheele, of Sweden, ind
y pendently, in IVA. Oxygen gas was liqr
h fed by NJ. Haoul Pictet, of Geneva, on d
cember p, 1887, and soon after by Ca
le letre, of Paris. The gas became iqu
as under pressure of 800 atmospher
es equa,l TO $500 pounds to the square in
10 at che temperature of 95o below zero of t
M Centigrade thermometer, or S5' of Fal
enheit.