The Louisiana cotton-boll. [volume] (Vermilionville [i.e. Lafayette], Attakapas, La.) 1872-1883, 1874-03-11
POPULAR SCIENCE.

PASTE THAT WILL KEEP 4 YEAR.-Dis,
solve a t~easpoonfWl of alum in n QHarI
of warm water. When cold stir in as
much -four as will give it the cOnsisten.
cy OF thick cream, being particular tc
beat mp all the Jumps stir in as mucl
powered resin rs will lay on a dime,
and throw in half a dozen cloves tc
give II pleasant odor. Have on the fire
n teacup of b0i ing water, pour the flour
mixture into it, stirring we'll all the
time. In n very few minutes it will be
the consistency of musb. Pour it into
an earthGn OF china vessel let it cool
lay a cover on, and put in a cool place.
When needed for use, take ont a por-
ton and soften it with warm water.
Paste thus made will last twelve months.
1t is better than gum, as it does not
gloss the paper, and can be written on.
The AIR We BREATHE. In absorbing
into our lungs the quantity of air nee
cssary to sustain life, we inadvertently
inhale whole hosts of ~microscopieaI an
imals, which are in suspension in the
atmospherical find, and even portions
of antediluvian animals, mummies,
and skeletons of past ages. Ev-
cry day and hour, this absorption
of animal end vegetable life pro
ceeds. We inhale the living microzoa,
several species of which are the fish Of
our blood, and the vibriones. which at
taCh themselves to our teeth like barna-
Giles to a ships bottom and with these
the dust of m"icroscopical animalcuIes,
so small that it takes Is, 900, 900 to make
a pupIVN for1 kIl So 1,-r --.--A +
pollen which, terminating in our lungs,
further the spread of parasitic life to a
degree far beyond that of the normal life
visible to Il eyes.
How To GET RID or MorHs.-Moths
nrc one of the scOurges of house
keepers, who frequently know not how
to get rid Of them. Camphor and to-
bacco are both good exterminators, but
will not stop the ravagcs of moths in
carpets after they commence eating.
Then they pay no heed to the presence
OF CanphOr, cedar or tobacco. A good
way to conquer them is to take a coarse
crash towel and wiring it out in clean
water. Spread it smoothly on the car
pet, then iron it dry with q good. hot
iron, repeating the operation on sus-
pectad places and those least used. Tt
does not injure the color or pile of the
carpet in the least, as it is not necessa-
ry to press hard, heat and steam being
the agents, and they do the work cfrcc-
tually on worms and egg Then til
camphor will doubtless prevent further
dcpredations of the miller.
LEAF N FLOWER IMpREssIONs.-Oil
n piece OF white paper on one side
hold the side that is oiled over a lamp
OF pine-knot smoke till quite black
place the green leaf on tho black sur
lace with the under partof the leaf next ?
TO the black surface, as the veins and +
tOers OF the leaves show palmer on the
under part-nOw press it on all parts of {
the leaf with fingers then take ND the !
leaf and put the black, oiled side on J
the white page of Il book (made for leaf 7
Impressions with an extra piece of nice !
paper on top to prevent shutting the ,
opposite page-press it a few mo- =
ments then remove the green leaf and ,
the lmprC ssion will be left on the page, :
beautiful as an engraving. Flowers !
OF single corolla can be pressed in like y
Many of the geranium leaves :
make beautiful impressions. The i'm :
presslon-book can be make still more y
interesting by giving botanical classif- =,
cations of each leaf and flower. g
IEAr AND DISEASE. During the re- Z
heating OF n furnace in an iron estab- 1
,lshment in England, says the British
Journal OF Science, themen worked when c
ne thermometer, placed so as not to be g
nhucnced by the radiation of heatfrom t
Ire open doors, marked 100 degrees. In b
he Bessemer pits, the men continue a p
'lnd OF labor requiring great muscular Il
mort at l40 degrees. In some of the 7
operations of.glass making, the ordi- Ii
lary summer working Temperature is II
considerably over 100, and the radiant Il
leat to which the workmen are sub I'll
octed far exceeds 212 degrees. In a II
.urklsh bath, the shampooers continue n
our or i've hours at a time in q moist h
tmosphere ut temperatures ranging N
lO5 to 10 degrees. In enamel I'll
'orks, men labor daily in q heat of over II
OO degrees. On the Red sea steamers. oil
temperature of the stoke hole is 145 81
And get in none of these cases cl
oes any special form or type of dis ia
'so develop itself. te
a PREVENTATIVE Fol TRoN.-Heavv ia
ilneral oil is, according to recent ex- sc
in England, a valuable pre- til
for iron. 1t is detergent when m
.eely and vigorously brushed over m
ready rusted surface, seemingly loos- dc
llng the bulk of the rust, while it also FRI
trkens that which remains and it like in
Ise acts as varnish If applied after the til
eanslng has been effected, or to new tn
bright work. RLts superiority to mi
'getable or animal Ills depends upon to
o fact that the bulls of the oil evapo- mi
ties, and leaves olNya very fine finn wi
hind. If the oil il light, and fully Il
iinod, it evaporatos so quickly as to me
but little good in this way but if W
lged or 'once.run " oil of sufficiently cal
Oh gravity be used, the resinous or his
roonaceous matter which gives the tel
lge to the oil remains behind. and to
the thin projecting film of var Sil
Ordinary varnish leaves far too The
and obvious n film, while the film cri
the once-run oil does its work of mar. Oui
'tlon without displaying itself As rig
CARDS the density of the oil reorirod ser
this purpose, that which stands be- bly,
the burning oil and good lubri- ass
ling oil is found to be the best. doe
- Art
EHE P~uLsATIoNs oFTHE HEART PHoro- wit
APHED.-An apparatus for rendering the
} variations of the pulse visible is one Am
the novelties of French ingenuity. EXP
ere is q camera, in which, by means mu
elook-work, a sensitized glass plate onl
pushed in front of a very narrow an. the
ure exposed to the light and in this pills
rture there is placed a glass tube, in eigi
ich a column of mercury NAV rise war
fall as in a thermometer. Now. bv Ara
to the wrist a rubber tube, "T