The Emporia news. [volume] (Emporia, Kan.) 1859-1881, 1880-04-30
SCIENTIFIC NOTES

SCIENTIFIC NOTES.
Prepared expressly for the EMPoRIA NEWS.
4 Dundee diver has attached tcle-
phone To his helmet and tested it during
submarine operations with very satisfac-
tory results.
The extensive studies of DIR. Decaisne
have proven to him conclusively that
immodcrate smoking of tobacco produ-
ces in certain subjects, especially in wo-
men and children, an irregular action of
the heart, which quickly disappears
when the cause is removed.
The st. Gothard tunnel furnishes an
other striking example of accurate sur
| veying. Although the entire length of
| the tunnel is nine and quarter miles,
| the two galleries were bored with such
precision that they met with differ
encc of only four inches in level and Il
! lateral deviation of less than eight INCH
cs.
Prof Loomis shows that over the
United States the rate of progress of the
storm centres is an average of twenty
six miles an hour, whereas, over the At
lantic it is only fourteen miles, and on
the continent of Europe, us shown by
Neumaycr, it does not exceed sixteen
miles an hour. In this connection it is
| pointed out that the winds on the At
lantic are stronger than they are over
either of the continents, and the winds
of central Europe are stronger than the
winds of the United States.
In cases of suspended animation, or
asphyxia, life should not too soon be Civ
en- up. Discussing premature burials,
in recent communication to the French
academy, Prof. Fort states that he was
enabled TO restore to life child three
years old by practicing artificial respira-
ton on it four hours, commencing three
hours and half after apparent death.
In another case which came under his
observation, II physician restored a near
| ly drowned person after four hours of
artificial respiration. This person had
been in the water ten minutes, and the
physician arrived one hour after as
phyXia.
Teeth are destroyed either by the ac
ton of acids or the development of a
Vegetable parasite. The former is the
much more frequent cause of decay. II
has been demonstrated by actual expert.
mcnt that even very weak acids may
suffice to decompose the teeth substances
In forty eight hours the juice of grapes
will render the enamel of chalky con.
sistence. Most vegetable substances are
inert until fermentation takes place and
acetic acid is formed Animal sub
stances exert no deleterious influence
until putrefaction. is far advanced.
The severity of the past winter in
France caused great injury to trees and
vines. The damage sustained by tho
Paris parks is indicated by the fact that
in the Bots dc Boulogne $4,000 ever
greens, 10000 frs and 10000 deciduous
trees are required 10 fill up gaps, while
in the Champs Elysees 5000 trees were
killed. The total loss to Paris alone in
the parks, avenues and nurseries is csti
mated AT n million francs. To seeurt
valuable hints for agriculturists an6
others the French minister of agricul
ture has instructed the projects to repOr
what kind of pines, fruit trees and vine.
suffered most from the cold.
The suns radiation is not without in
iluence on the comfort of the occupant.
of house, and the influence may b,
very differently felt. according to the ex
/ posture of houses. In building unai
fected by any shade Herr Vogt recently
made series of experiments to deter
, mine the relative amount of the sum-
heat daily entering the different sides
. He obtained the surprising result tina
more heat enters building through
/ the cast and west walls than through
, the wall facing directly south, although
, the south side is exposed to the direc
action of the suns rays nearly twice a.
long as either of the others. A consid
T erably greater heat is received by tn,
east than by the west side.
! The inflow of sewage is the source O
much distrust of river water. Prof Ii
dy believes, however, that within Ger
+ tain limits the pollution of the .wate
r from such cause is too slight to produc,
! any effect In lengthy paper on tn,