Savannah morning news. [volume] (Savannah) 1868-1887, 1886-07-12
POPULAR SCIENCE.

The Maluva tree OF Central India (bas-
STA latlfolia) bears flowers which are now
being exported to Europe for their sugar,
of which they contain more than half their
weight. The tree resembles the oak and
IL single specimen sometimes bears ton
Of flowers.
Select several cards OF different colors,
and in the centre of each fasten by little
mucilage small round piece OF black
paper. Place over the card thus prepared
piece of thin white tissue paper. The
variety of hues which the black assumes
Is very striking.
Put pure olive oil into a clear glass
bottle with strips of sheet lead and expose
il TO the sun tor TWO or three weeks, then
pour off the clear oil, and the result Is a
lubricant which will neither gum nor
corrode. 1t is used for watches and fine
machinery of all kinds
A new alloy melts at 100 degrees f., or
considerably below the temperature at
which the magical spoons Of long ago
melted in 6 cup of tea. It's composition
is Bismuth. 4S; cadmium, 10; lead, 10 /;
tin, 90. 1t will stand severe pressure and
Is especially adapted to many important
uses.
A recipe for rendering paper az tough
as leather consists in mixing chloride OF
zinc with the pulp in course OF manu- ac-
ture. The greater the degree of cOncen-
tratlOn Of the zinc solution the tougher
the paper. 1t can be used for making
boxes, combs, for roofing, and even for
making boots.
For copying printed matter, dampening
the surface with weak solution of ace
tate Of iron aud pressing in an ordinary
copying press is recommended. Ola writ
ing may also he copied on unstZed paper
if wetted with weak solution OF sulphate
OF iron, mixed with a small quantity OF
solution of sugar.
An ingenious Partisan, NJ. Adrian Ga
con, has patented a blasting powder,
which provides anew explosive compound
intended TO have the force of dynamite
without its eXtra-hazardOus properties.
Tue compound consists OF a mixture Of
nitrate OF potash or nitrate of soda with
sulphur asnes and tannin.
Mahogany and other rare valuable
woods are dug up from muck beds on the
estate OF Capt. }. G, Patterson. At Pensa-
cola. Prof. Won Filkenhasser, OF Nor
WAY, who has examined this wood NINE,
states that the woods referred to are suit
! able for furniture and the specimens eX-
amined are fully 5000 years old.
1t is injurious to feed boilers cold water
near the bottom, just where they are not
test. because the cold feed water in be-
coming heated robs the hot sheets Of their
heat before IL can rise. Top iced (say by
pipe running lengthwise OF the boiler.
| three or four inches below the water-line
! viii save leaks and danger.
A German test for watered milk consists
| in dipping a well.pOlisned knitting needle
into deep vessel OF milk and Their imme-
dIately Withdrawing it liz an upright po-
sition. II the milk is pure drop of the
! fluid will hang to the needle; but the adj
! dition OF even a small proportion of water
VIII prevent the adhesion OF the drop.
| The interesting discovery has been made
in Switzerland OF a bright green moss
growing on calcareOus rocks 200 feet be-
| low the surface of Lake Leman. No other
moss has been known 30 far under water,
and Low chlOropbyl, the green colorlng