The Bolivar bulletin. [volume] (Bolivar, Hardeman County, Tenn.) 1865-1888, 1879-02-27
MECHANICAL AND SCIENTIFIC.

Electric carriage lamps a French in |
YentOT proposes to produce, so that |
ordinary carriages drawn by horses will |
be Illuminated by electricity supplied
by the rotary motion of their wheels, !
locomotives while in motion shall light
up the trains they draw, and steamships
supply themselves with powerful lights.
The Darwinian maxim that the heaVi-
est and finest seeds tend to produce the
finest plants has found support in the
observations and tests made by Mr.. A.
= Wilson on turnIp seeds. Large seeds
gave 2 product of two pounds seven
ounces per seed, against two pounds one
and one-tOuTLh ounces in the case Of
small seeds.
California cactus is one of the newest
articles from which paper is made, and
process has been patented In Germany by
q Mr.. NordlingeT, OF Stuttgart, Tor ren~
dering the fiber or the hop plant suffi-
GENTLY tracGa0le for the purpose. The
stems and other parts are boiled in
water and soap for three>guarters of an
hour, thoroughly washed, and then again
boiled III very much diluted acetic acid
TIE tibers are then washed, dried and
ComEed, and are ready Tor working.
Several French veterinarians assure US
that pulmonary consumption Is quite a
common disease among cattle, and that
Il may ne transmitted from one animal
10 another by taxing the germs with the
iOOd. We are also told that the flesh
and milk OF animals thus affected may
contain the germs which are readily
transmitted 70 human beings parJakiug
] OF their milk or Fl Sin ; also, that 1r, .inary
cooking IS not sufficient to destroy these
germs With the Jichina in pork and
| germs OF cOnsu pgion In beef and NUT
/ ton, II a marvel hat the human race
has not long since persisted. SILL a lew
/ 90 live 70 a good old age in spite or their
numerous parasitic enemies.
Il is estimated by chemists who have
care uly investigated the sUhi-ct. that
thousands OF barrel OF what is known as
terra alba, or white earth, are every year
uiX-d in various Urms and by ingenious
me huus WI h Gimme cIal sugars and
other white subslances-the use of the
article tending, of course, to produce
stone, kidney complaints and various
diseases G the st, mach. 1t IS alsO used
Ia confectionery very extensively, and
various poisonous substances are en-
p.Oyed, Ia addition, Tor cOlOTIUg COnfec-
LIuneTy. Regularly established mills are
now in operation, grinding white stone
into fine puwdsr, and graded, it Is said
for U-e IN the pre- yaraCion of soda, sugar
and -four.
The causes of such frequent failure
and leakage in the small iron fue tubes
Of tubular steam boilers Prof Hayes
attributes to the deposits found in those
tubes, both before and after they have
failed. These tubes are cleaned at in
tervals, when the boilers are In use, with
cylindrical wire brushes, and when only
dry dust or little SCOT is drawn out by
these brushes the tubes may be con
sidered to be in good condition. But
there are frequently deposits in the
tubes that are pasty in places and roll
along uuder the cleaniI brush Ike
pieces of dough, or the quantity of dry
powder deposited in the tubes may be
quite large in such cases, says Prot
Hayes, there is danger of rapid COrrOsion
and weakening OF the iron, and, this
being the case, analysis should be made
O! the deposited material removed by the
) brushes, in order to determine its nature
and source.
Il is known that ozone when prop.
eTly sppiied, is a most effective and con-
venient agent for restoring books or
prints which have become brown by
age, or been smeared or sOied by color
ing matter - only g short time being
required to render them perfectly white
as II Just from the press, and this with,
B. out injuring in the least the blackness o.
the ink. An example given OF the re
suits produced in this way is that OF s
D book OF the sixteenth century, upon 8
{ page of which several sentences had ueer
q painted over, by the monks Of that day
. with a black, shining, colOring matter
y IN order TO render them iilegibie, and OF
] which no trace OF d line could be de
{ tected, After thirty-six hours treat.
r ment with ozone, the cololing matte
y was entirely destroyed, the most careful
d scrutiny OF the page failing to disclose
10 the iacU that any o. the lines had one,
been painted over Writing-ink MAJ
e be readily discharged by ozone, especially
s. il the paper be subs quentIy treated
with very dilute chlorhydric acid u
ie move The oxide Of iron