The Sumpter miner. [volume] (Sumpter, Or.) 1899-1905, 1902-08-27
GEOLOGICAL SURVEY.
Bulletin on Topographic Sur
vey Of Eastern Oregon.

The topographic survey Of the state OF
Oregon, which was commenced several
years ago, IL being continued this season
by the topographic branch Of the United
States Geological Survey, under the gen.
eral direction Of Richard 4. Goode, yeog.
rapher. Work IL in progress in two
localities, one IN the eastern part Of the
state, IN the vicinity of Biker City, and
the other west Of the Cascades, in the
vicinity of Riddles.
The party operating in eastern Oregon
is in charge Of &. +. urquhart, his prin.
cipal assistant being X. B. Robertson.
The work is an extension Of the existing
trianyulation eastward and nOrthward
into Union and Wallowa counties, the
object being to provide starting points
for future topographic work, which will
extend through the forcsted areas and
mining districts. The party commenced
work about July !, and will remain In
the field as long M the weather condi.
tions are such that the work can he
prosecuted IN the mountains.
In western Oregon II party IL under
the charge Of A. Is. Scarlc, and has com.
menccd operations IN the vicinity Of
Glendale. The work is the continuation
oi that commenced during the last field
season, and will result in the completion
Of the Riddles quadrangle, comprising
an area Of about NO square miles. This
region is noted for its various mineral
deposits, the examination and study of
which by J. :. Dellcr, geologist, will fol.
low the completion Of the topographic
map.
Another party, under &. u. Sempcr,
will be engaged In carrying II line Of pri.
mary levels from tidal connection at
Bcnicia, CAL. along the line Of the
Southern Pacific railroad ~ TAR north
toward Portland M available funds will
permit. Iron bench-mark posts, ON
which will bc stamped the elevation
above SEA level To the nearest foot, will
bc established ut all prominent points
and at intervals not exceeding three
miles. These levels will furnish main
trunk line from which other lines Of
levels will ultimately branch into the
territory cast and west of the state line,
thus furnishing vertical control for future
topographic work.
GOVERNMENT INVESTIGATIONS ~ POLLUTION
N srWEAMs.
4, the beginning oi the present season
the division oi photography oi the Unit.
cd States Geological Survey instituted u
branch oi research which is expected not
only Ia bc of much value to muncipali-
ties and numerous industries dependent
on the purity oi their water supply, but
also Ia exert u beneficial influence upon
the health oi the general public. The
investigation aims Ia discover the chang
ing conditions oi all the important sup
ply streams ot the United States by
chemical and archaeological cXamina-
tions oi their waters, and also 10y meas.
urcmen,s oi their turbidity and color.
The division oi autobiography has for n
number oi years been collecting iniorma.
,ion regarding the volume ri How oi the
country's streams, ~ n basis Tor munich
pal supply, water power, irrigation and
other uses, bu, tests ior quality and con.
di,ion have no, before been made, ex.
cept by few cities which hold an ad.
vanccd position in matters oi public
hygiene.
The facts desired, besides turbidity |
and color, in the present research are,
the odor, amount Of nitrogen as album
inoid ammonia, free ammonia, nitrites
and niiruirs the Amount OF chlnrinr the