Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1897-12-11
SCIENTIFIC MISCELLANY


The canning of sweet corn is an in
dustry of remarkable growth, the first
corn having been packed about 1853,
while 1900 tons were put up in the
United States in 1895. Recent large
losses from souring have led to an in
vestigation at the Massachusetts in
stitute of technology. The souring Is
found to be due to fermentation set up
by bacteria, which exist on the corn in
the field, and are not destroyed by the
temperature of $50 degrees to 100 de-
grees at which the corn is cooked in
the cans. To effect sterilization the
packer places the cans in retorts
heated by steam under pressure. Ex-
pertinent has shown that a temperature
above the boiling point of water must
be reached throughout the corn to kill
all bacteria. and that exposure of the
cans for sixty minutes to $50 degrees
+. ensures complete sterilization. but
the minimum time and temperature of
safety are still to be determined. Con-
siderable time is essential on account
of the slow conduction of heat through
the corn. A demand for corn of light
color seems to have led the packer to
reduce too much the time or tempera-
ture of the sterilizing process, and the
soured corn of late years has resulted.
From records of an immense number
of observations, Dr. Gerhardt Schott
draws the conclusions that the So
called Gulf stream" does not exist as
warm current east of 40 degrees w.
and has no rapid movement east of 60
! degrees w; that the Labrador current
| does not anywhere touch the sea-
| board of the United States, and has
| nothing to do with the cold WALL"
| and that on the Great Banks there is
practically no current. The warm and
cold streams are irregular movements
not liable to definite changes with sea-
sons.
| A recent calculation shows that cleo
| trio heating for cars costs over five
times as much in fuel as heating by
stoves, an expenditure equivalent to
six horsepower being required to raise
the temperature of an ordinary car for
| twenty-four people from degree to
60 degrees +. 1t is estimated
that double windows would re-
duce the fuel expense one-half.
Glass is usually colored by fusing
with a metallic oxide, the entire mass
| being changed. In the new process of
NJ. Leon Lemal, patterns are beautl-
fully stained upon the surface by pen
etration, n yellow color being given
| when n silver salt is placed In CON
tact with the glass and the whole
heated to $50 degrees to $50 degrees
| F. The depth of penetration depends
upon the time of heating, the shade
upon the quantity of the salt applied
In five minutes, the color had reached
depth of 1-150 of an inch, in an
hour, this depth was doubled. and in
| is hours, n plate Lie of an inch thick
was colored throughout. The yellow
has n fine greenish or blush huores.
ence. Photograph collodlon mega.
tives can be applied directly to The
glass, and lace patterns can be trans.
ferred by simply dipping the lace into
weak solution of nitrate of silver
and then into potassium sulphide
Other salts-such as those of gold
copper and iron-can be used, silveI
with little copper giving Il red color
Psychologists have yet to recort
many curious workings OF the mind
DIR. Ginostos has reported to a Bor
deaux society the care of u young mai
who, since he was ten years old, hai
had an Irresistible impulse to coun
the letters in words and phrases
This he does continually while awake
without interfering in any way Will
his daily work, his reading, or his con