The Sunday herald. [volume] (Washington [D.C.]) 1866-1887, 1886-04-11
SCIENTIFIC AND USEFUL.

Saiicyllc suet il used In the German army M q
remedy for foot sores, etc., instead OF the salicyc
powder formerly employed. II Is composed 0f two
parts OF pure sallcylic acid and ninetyeght parts OF
the best mutton suet.
by the new process of toughenlng timber, It Is
claimed that the effect produced upon wildwood Is
such that cold chsel Is required In order split It.
This result Is accomplished by sneeial method Of
steaming the timber and submitting Il 70 end pres
sure, technically rupse,tpg IT," by this means the
mess; and Is the opinion OF those who have expert
mented with the prooesa that wood can be CON-
and that some OF the timber now considered unit
for use In such work AZ carriage building, for In
stance, can he made valuable by this means az u
substitute for ash, hickory, etc.
The Willlmantc (Conn,) Thread Company some
time since accidentally illustrated the influence OF
plants on the atmosphere. The nature of TING opera
tions OF this company demanded q reasonable and
constant humidity OF the atmosphere In their shops.
Tq Obtain lhlh they had employed two men and a
crease the comfort aud pleasure Of his operatives,
commenced the cultivation OF plants around the fac
tory and placed many IN the rooms, employing one
Was at once changed In character the spraying ma
chine was no longer needed, one mans wages Were
saved, and the operatives were Surrounded by beau
tiful lowers and their lives made more pleasant.
An Ingenious arrangement for automatically main
tanning an eluable temperature IN rooms Is the re-
| cent invention Of a brooklyn man. A wooden
frame, which may no placed either In the upper OIL
lower sash IL divided into alternate parts OF glas,
| and metal. The metal strips are plvOted ut eacl
end anu all attached To one metal bar which IL con
necied at one end OF the frame with the armature
an electro magnet, covered by wooden box, ant
| the other end IL drawn back by spiral spring. Tit
| Thermometer has wire let into the bulb, and also
fused into the glass tube at any desired degree
| The electromagnetic, thermometer, aud battery ar,
connected by Insulated wires. The mercury In III,
tube, acting as part OF the conducting wre will, al
II rises and falls, connect and dsconnect Win u,
hA All lha lnlaA atAl
attracting aud releasing ihe arialure, and thereby
opening anu closing the movable stats In the frame
II has been practically demonstrated that by The hs
OF this instrument any apartment which In artincla
heated may be Kept for days ut temperature wheel
VIII not vary more than one degree
"TRe last new thing In hats heats al, thai has gon
lefore II" says The ~. ,ldRess 6dzette, sand 4
scarcely likey ia he equaled by anything that cal
follow after II. Herr Luders OF Certz has patented
"a Photographic hat'or, as we ought rather to say
a photographing hat. 1henoyel head dress contain
in lis upper part small Photographic apparatus AM
number OF preparedpates In The hoat OF the In
there Is small circular opening, behind which IN,
lens IL liked. by means Of u string the outslde o
the nat, Its wearer whichever he nnds himself enjoy
| Ing a pleasant view or attended by an agreeabl
person, eau simultaneously photograph the land
scape, the lady, or the gentleman unconsciousl
within range OF his Instrument. The hat will prob
ably be IN demand by two sorts OF persons-b
lovers aud detectives. Tue former, by merel
pulling string. set the image OF his beloved nc
only In his heart, but In his hat The gelatlne
bromide plates III the specimen exhibited by Her
l.uders are ssSss millinetres In size; but, II on
does not object TO wearinga very large hat, III
plates may be proporllonately Increased In sz,
The potentlay OF the hat for police purposes hard
needs TO be described"