The sun. [volume] (New York [N.Y.]) 1833-1916, 1893-03-19

fourth Length fuses ut eighteen. snperes.
nine and one-half amperes: fifty amperes IN
three inch length fuses at seventy-two and
and ten sm ~ Gas t l%Sh hu IehEed an IN o oee sq IN f6sa
and threo.t2urths inch length fuses at two
hundred and twenty-four nmperes. In ono inch
length Mt three hundred and sixteen ampAres.
From these data it appears that. In tn. small
sizes. a large percentage Is made between safe
mem. being small and the unnecessary blow
ing Of n fuse troublesome: as the capacity In
nye hundred a,nperes but ten per cent. Of
allowance is made.
Another method of treating ramie. in its
adaptation to textile manufacture. is brought
forward by a French inventor-a chemical
process depending principally on the employ
msnt OF basic manganates. a satisfactory
result being realized by the following plan:
100 kilograms o. ramie. to which is then added
= solution q manganate OF potash or soda. In
5uOlitr-s OF water. The necessary proportion OF
manganic acid to the alkali is stated at about
S Sas to oc iSu ToS as 2 hn iarg tT.p TsHportio1 Of man
deprive it Of its tenacity. The whole j. now
boiled i9r from two to five hours. according tn
this ope alton the Gum. are com letely acted
on and the color Of tho nbre varies from black
washed in water, and then passed through a
bath Of su!phurous acid to dissolve the man
Eahese "1lheS ucppsltoI. ana AFTER this they
tie the rnaaSaRs-s s %n- io"m I'd e1a'tlFtthly ys s stsGs tSs
p pPr" f.qS t5ei hsnd is Trs4y for o 9si iin asd o. may syd be
The ibre Is said to be very silky. retaining It's
suppleneSs and %tenacity.
A German chemist suggests a method for
thu preparation OF an absolutely water
proof cement. consisting in tho addition
to the ordinary article Of acetate or
palmitate OF alnmina. and. by the fur
ther addition Of chromate Of magne-
SUMPTION is that cement OF this character
situations. or for tanks. &c. undereround.
I \ ,nroGortiHIn Of palmitats Of al9mina to be
ana the character Of the work. to bs done
ten Per cent. however, Of the paint
any kind OF hydraulic mortar. In ca.e the ce"
mont !? required I. resist humidity, and at the
bya mixture consisting Of about einal parts
% the cement mortar with the naimitate and q
s ShTomi nm m,Gnesis xd lt re- With vii OXIDE OF
nina eight 'cn 10 twenty-five parts, ana eiGh-
t.en, to twenty parts magnesia. The mixture
into briqurt:es Of convenient size for hand.
ling; which are caIcined. pulverized. and Kept
ready Tor use.
In rcmarking uron some OF the wonderful
me'hanisnis which human ingenuity has
brought 10 PASS, O recent French writer de-
clares that. rs compared with any sort OF a
machine that can he named. an ordinary
watch Is Il marvel. In proof OF this. IL is sins
ply necessary 10 consider. he says. the few
lacl = winch render tue contamination OF such
an Instru lnent possihie-the spring actuattng
the nurrel, the motion of this being trans
ment, whose wheel strikes the anchor, or The
cylinder 81 tho Fa,an"s wheel. at an aver
age inta Of 5000 blows per hour, with
Of from ',GpO to 4OJO. 40
to ihh system. another gearing re-
iarls the motion transmitted To the hour hand
In the ratio OF twelve to one: NIL the motions
Of III" instrument are observation-disclosures
tko eNceoling TWO hundred million a year In
certain watches. Again ut the end Of twenty
years, a we'll. made watch and one that has not
r"n d sabird prema'urely. must undergo q
change. but IL is after several thousand
million ~ tho little lumIs have been made and
Alto the escppemant wheel has made tens OF
mi lions OF ~revoluti ms. This handicraft is also
Graph, record OF dates. and minutes
Prof. Stokes. tho eminent scientist has IN q
most Ingenious manner lately demonstrated
presence OF suspended matter in flame.
The WAY this l. c~pti"ally proved Is by con-
I"Gsiug sunlight on the flame, and tho light Is
Ten a.attersd - the solid PARTICLES in an eS-
'nters the fame, and where 1t leaves II. It's
r~o'ariZe in the lame OF refection-sn effect.
watch Is not found In all hames-.t
IrinE a. sent. for instance. In that 81 q Bun
'eu fa'ne Hinged with burning sodium. In
he latt rcas@ this seems to he due to the fact
hat The sodium is in the form Of yapor. ASs
u solid particles