The Wichita daily eagle. [volume] (Wichita, Kan.) 1890-1906, 1892-01-08
SCIENCE AND INDUSTRY.

Since 1850 S12, 600, goo has been ex,
pended in constructing 1900 miles OF
canals and II, 900 miles of distributing
bitches, which now furnish irrigation
for 9, 600, 300 acres of land
Aluminium promises 70 be OF great
value in the construction of sounding
boards 1t seems possible from its free
dom from the metallic tone-color to isu-
prove very much the quality Of the tone
of the photograph, by getting rid of
the metallic sound so offensive to the
ear.
1t is said that half the tin OF the
world is exported from the Malay Pc
ninsula, where mining is carried on al
most exclusively by the Chinese. The
mining is that of flood tin, and the
metal is taken from the lowlands near
the mountains, where it is found in
pockets ten to twenty feet or more be
low the surface.
The length of the structure over the
Mississippi at Memphis is to be 5000
feet-bridge, 1900; iron viaduct, $500
feet; timber trestle, s, 100 feet Its eight
piers are TO be III to 1917 feet in height.
The deepest foundation is 131 feet be
low low-water mark. The central span
is to be GIL feet in length, with can't
lever arms 1863 feet in length
1t has been proposed that the car
bonic acid gas that is liberated during
the process of fermentation in brew
cries be utilized by condensing it into
liquid form that can be sold for eight
cents a pound. 1t is estimated that
%, O00. 900, 900 gallons of this gas are
produced annually in the breweries of
Great Britain
chlorine in water indicates pollu.
ton. The state board of health OF
Massachusetts has sent out map show
ing the rorma amount of chlorine in
the water supply throughout the state.
If in the fnture the chlorine exceeds the
normal, Il II, with some limitations, &c
be considered as an indication that the
water has been polluted by sewage OF
household waste.
An interesting archaeological dis
covery has joEt been made in the forest
of Eawy, near Saint-SaenS The exca-
vations undertaken by Mr.. CASTOR lie
Breton have recently brought 70 light
the walls of q building seeming 20 be
the remains OF little antique temple
belonging to = c second or third cen.
fury. 1t is quaArRngulaF in form. and
stands completely alone. Among the
debris they have found some statues OF
the Venus Anady pmene in baked earth
Paris La Naturn
German scier lists, who have re-
Gently investigated the subject, assert
that the heart of Ene oak begins 20 de-
cay at the age OF 800 years The pine
tree lives to. the average age Of 500. but
some OF them have fourished for zoo
yearA They assign 425 years 20 the
silver fir, 2T5 years 70 the lBrcb, 2s5
years TO the red beech, 30 TO the aspen.
200 to the birch, ITO to the ash, I85 70
the alder, and 13o TO the elm
Contrary 70 the general belief Chat
the dragon fly is dangerous and has p
vicious sting, Prot Bickmore SAYS that
It Is not only harmless but = good friend
10 man, because II skins over the sag
nant pools and quiet lakes where mos
uuitoes breed, and oats them Some cx.
periments had been made 20 ascertain
If dragon flies could not be bred IN sufi
cient mum bers 20 completely exterTnf
nate the mosquito. but they had not
been successful
Iowa, S2l- So. 900 bushels Of corn. !
illinois, al, orc. 900; Missouri 2o1. f76 900 {
Kansas. I68 Sc. 00); Nebraska, 145. co.,
700; Indiana IIe. fe0- 900; Ohio. Sc. 20.
700; Texas. %. -. 900; Kentucky. &C.
30. coo, and Tennessee, sLs24- 600, are
ne ten leading corp 7yrowing states 40
.ording 20 tie estimates Of the depart
neut q agriculture Iowa Is also - The
read Of the list IN point Of sveragr
-ield. her rate being So bushels pr
lcrs; Ohio's average IS placed a. =. :.
ndiaua's g.. Illinois ai2. Missouri
o 8, kansas % :. Nebraskas 3s.A