The Middlebury register and Addison County journal. [volume] (Middlebury, Vt.) 1883-1885, 1885-10-16
POPULAR SCIENCE.

Professor Kaltenbach of Giessen, has
mentioned two instances in which i'm
munity from contagious diseasc-im
parted by an attack of the disorder has
been transferred from parent to Off
spring.
DR.. Lander Brunton said recently that
headaches were usually dependent either
upon the presence of dccdyed teeth or
of some irregularity in the eyes, more
especially in the focal lengths between
the two
From statistics collected in the abat-
toirs of Munich and Augsburg, Strauss
has found that not more than one calf in
100 600 is consumptive. The danger of
conveying consumption with vaccine OBJ
tanned from these animals is therefore
slight.
According to German histologist,
there are IN the cerebral mass 300, 600, 600
nerve cells each an Independent organ
ism and microscopic brain. OF these
nerve cells he estimates that 5000, 900
die every day, and that every sixty days
the brain is replaced.
DR.. Ernst Fuchs, author of prize es-
say on blindness and its prevention, states
that short sightedness, which is increas-
ing so alarmingly among reading people,
is the cause of ten per cent. OF all cases
of blindness of one eye, and that the
immoderate use of tobacco gives rise to
partial blindness.
In the New Orleans NelicaJ JouyBaI
DR.. Matas says that as we approach the
tropics there seems to be well defined
pyrogenic belt within whose limits re-
markable changes take place in the
blood. In tropical countries the com
pleXion OF the people is that of conva-
lescing from fever; but healthy existence
in any pyrogenic region would be out OF
the question were our blood constituted
precisely like that of the inhabitants o.
cold counties.
After a study Of eleven months, DR..
Hugo Winnacker, of Gottingen, has
found that the vegetation of the stones
of street CUTTERS consists of green algac
and fungoids. The algae are harmless
and even beneficial, for they grow over
the fungoids and at their expense, and
help to keep them down. Most of the
fungoids appear to be harmless, but
some of them may be dangerous disease
germs, TO be freely distributed by the
wind when dry; and, as it is difficult to
distinguish their qualities, the growth of
this class of plants should be prevented
as far as possible. The character of the
gutter vegetation may be different in diff
ferent cities.
According to Professor Tyndall's in.
vestigations, the singular blue color of
the water of the Lake Of Geneva is due
to the presence of small mineral parti-
cles, probably derived from glacier dust,
brought into the lake by drainage from
glacial streams, and of such extreme
minuteness as not to settle even when
the water is allowed to stand for long
time. Examination also makes apparent
the fact that not only is the light mainly
blue from the first moment of its reflec-
ton from the minute particles, but the
less refrargible elements which always
accompany the blue are still further alb
stracted during the transmissions of the
scattered light 10y true molecular alb
sorption. These two causes, scattering
and absorption, are therefore con-
sidered sufficient to account SATISFACTORY
ly for the exceptional blueness of both
the Lake of Geneva and the Mediterra