Amador ledger., 1909-08-27


artiHcially impressed with definite
new character, which at once becomes
hereditary, and may be transmitted
to numb berless generations. The
discovery was made about three
years ago in Frankfort. where Mas
sini found that bacterial intestinal
parasite cultivated in the presence
of milk sugar acquired the new pro!
perty of producing lactase, the
engine that decomposes milk sugar.
Shortly afterward a second bacterium
having the same popularity was
noted by Burk, and since then three
others have been made known by DIR.
Reimer Mueller. 1t appears that
when the culture of bacteria exhausts
it's usual food, some of the group
suddenly try the pew substance.
These develop so rapidly as to rise
up above the others in the culture,
forming the KNOBS" by which the
altered bacteria are Teoognizd. and
the acquired taste is retained and
handed down to other generations.
DR.. Mueller has made systematic
study of hundreds OF Kinds of
bacteria IN the presence of iS sugars
and other carbohydrates, He has
found many bacteria that develop
the characteristic knobs with arabl-
nose, duIcite, sacecharose or other
material, but very few were affected
by more than one substance. Ty-
phoid bacilli we're altered in four
days on agar containing one per cent
of isoduicite. The phenomena have
practical value, snch as giving the
chemist reagents for detecting car
bohydrates, and the physician, tests
for recognizing various diseases.
In the novel electromagnetic drill
of Buruk hardt. German engineer,
eIectr romagnets on both sides of the
drill spindle hold the machine urmly
against the work and an electro motor
rotates the tool for drilling, counter
sinking or other operation. The
machine is designed for shipyards
and machine shops generally.
Aluminium coins have been found
ty abrasion experiments at the
French miut to wear less rar idly than
coins of gold, silver or-even bronze.
The recent conclusion that all
boiler corrosion is result of gal
ganic action is being questioned,
and another cause has been brought
to the notice of the Society of
Chemicl Industry by Il. N. Huntiey.
In this case sulphur appears to have
produced the ptting Of boiler.
Increase 10 the caustic soda used had
10 effect, and the water was slightly
alkaline, but hlisteTs formed-espec-
tally near the water line proved to
coptain ferrous sulphate with a slight
excess of sulphuric acid. The investI-
CATION has suggested an explanation
of the curious acid corrosion in aka
line water. The sulphur contained
IN the water seems to be first oXidiZed
to sulphuIic acid and this attacks the
metal about it, depositing oxides that
form me n brane permeable to oXy-
gen, but not to alkalI. Thus the acid
continues it's work of corrosion, while
protected against naturalization by a
shield of its own construction.
A striking connection between alco-
holism and tuberculosis has been
brought out by Jacques 8ertillon in
set of maps based on the latest
French statistics. lac maps show
that in the north of France the COZ
sumption of brandy per inhabitant is
much greater than In the central and
southern poItions, and that the line
OF separation corresponds to that of
the limit of vine culture. In wine
drinking regions the use Of brandy is
small, The phthisis map agrees very |
clo;ely with the alcoh 'lisn map, ana !
Indicates that the use of brandy aud |
other strong alcoholic beverages gives
conditions specially favorable for tho
development of tuberculous diseases. |
Phthisis among saloonkeepers, more
over, is more than twice as frequent
as among other merchants, the yearly
deaths being 573 and 245 respectively
in each 100, 900, In Paris phthisis sis
twice as ommon among males as
among females, and this also seems to
he due to the fact that alcoholism is
chiefly confined to men.
A new Austrian rife bullet, de-
signed to pierce the shields of field |