Morris tribune., 1883-05-23
the streams, and to stop the wearing
away of the bare hiilsides trees are to
he planted as rapidly as possible.


On the basis of the capillary phe-
nomcna, De Heen has calculated that
one twenty-fifth of an inch contains
about twenty-five trillions of MOLE
cules.
Dr. J. +. Pollock considers that the
evidence furnished by the BromptGn
! Hospital, London-which has had by
| far the most extensive experience
with the disease of any institution in
the world--proves that consumption
is not conveyed from one person to
another hy contact or by breathing
| tie same air. At least, during the
| thirty-siX. years the hospital has been
in operation, the medical attendants,
nurses, and others employed about
the establishment, have been unusu-
ally free from this affection.
Prof. TAFT lately announced to the
Royal Society of Edinburgh that he
had scceeded in obtaining a specimen
Of pure iridium, and that 10y means of
this and pure ruthenium he expected
10 succeed in making standard
thernlo-electric couple. Such an ap-
plratus would give what he had long
sought definite standard for COM
pairing very high temperatures, such
as those of furnaces, ETC., for which no
suitable instruments exist at present.
DR.. John Hopkinson, +. II. S., states
that electric lighting in London must
now cost rather more than lighting by
gas. In regard to future increase in
the economy of the former, it may he
said that no material change can be
expected in engines, boilers or
dynamo machines, although the first |
cost of the dynamo-machines may be |
somewhat lessened. Great improve
ment is, however, possible in incan-
descent lamps. With these great |
economy of power can be had by driv-
ing them ut high pressure, but then
the lamps soon break down; and the
problem is to so improve the lamps in
detail that they will last for a con-
siderable time when pressed to their
highest efficiency. By realizing such
improvements DR.. Hopkinson believes
it would be possible to get five times
as much light for a sovereign as can
be done now.
A series of photographs illustrative
of some experiments made by prof.
Won Ziemssen formed curious eX-
hibit at the Munich Electrical Exhibi-
tion. These pictures showed human
face bearing the expressions of joy.
pain, surprise, doubt, disgust, ETC., the
various changes having been each ex-
cited in turn by bringing II current of +
electricity to act upon the different
facial nerves of the person photo
graphed. Under the electric influence
each set of nerves produced it's own
peculiar contortions of the coun-
tenance.
Montreal, which so handsomely en-
tertained the American Association
for the Advancement of Science last
is to receive visit from the
British Association in 1884, and no less
than $40 members of the latter body
have already signified their intention
of attending the Canada meeting.
From a discussion of the sunshine
records made in Great Britain during
the years 1881 and 1882, Mr.. w. w.
Rundell, +. r. S., makes it appear
that the coasts enjoys more bright sum
shine than the inland country.
Ina paper read before Il Manchester
(Eng.) association, Mr.. Veitch-W Will
son, after recounting his experiments
with lubricants, stated that the safest,
most efficient and economical
lubricants for all kinds of bear
ings are to be produced by judicious
mixtures Of animal or vegetable with
good mineral oils.
After being broken on a testing ma
chine bars Of steel and iron are found
to be magnetic. Mons. .Bissinger finds
that the phenomenon is not due to an
of the bar, but to tire shock
and trembling of the metal on break
ing: and both parts are converted
into magnets af sensihly equal power.