The New York herald., 1874-08-05
rUI RorvDApyre ~ 1.~s i.xa

TIE BOUNDARIES or ri.S AREA
to be mapped by your division, or as much OF IL as
the season will allow. as follows s:-Commencng at
the intersection OF 100 deg 80 min. and 40 sec 10
runs east on parallel 20 deg. 80 min to It's inter.
range, thence southeastward about ten miles
along that crest to the northern boundary OF last
dary. to the head OF Muddy Creek, In the
MIDI middle PARK thence southwasd along that tnat
River; thence sonthward up the Blue
River TO the great head that lies north OF Mount
Powell, thence In straight line TO Mount
Powell. thence southwark along the crest OF the
Park range TO its intersection with 80 deg. 80
thence westward on this parallel to It's intersec.
ton OF the Eagle River thence down the Eagle
River TO- its junction with the Grand River;
thence down the Grand River to the inter
section OF meridian l09 deg. 80 min. For the
accompanying tracing these lines were approx
lmatey laid down. and also the divisions or the
country into maps.
You are first to complete the unsurveyed portion
OF map IS ana then proceed with the survey Of
map II.
THE TYPOGRAPHICAL STATIONS
are TO be placed so tnat all the country shall be
carefully overlooked and as many points as posi-
trlgonometrc station IS to be marked by stone
monument five feet high, built OF such materials as
may be at hand. In the top OF the monument Is to
be placed stick two leet long with SO uared face
not less than two inches on winch shall be cut the
number Of the map and the number OF the station,
TO proceed from No. L. at the northeast corners OF
the maps TO the highest number at the southwest
corners. Where two or more parties are at work
ing tracing the numbers to be used for stations by
each'party. ON map IS you have from No. 100 TO
tions. On map n you have from No. to rs and
from 100 to 200. On map 81 from No. 55 to So.
Should II be necessary to use more numbers you
VIII mark them with the above numbers and one
hall, as-M. II; $. 51d.
pccted that the route OF the topographer will be
approximately meandered and a good vertical
section made with the barometer or aneroid. The
roads and trails are to be carefully traced, and IN
general the note books are to snow reliable data
for q detailed map on the scale which we use.
PERMANENT BARoMETRIC STATION
at the White River Agency, and il possible, neiin
the Middle Park. These are to to be equipped
with barometers, wet and dry and maximum and
minimum thermometers. :.
The baromelers that you take are TO be carefully
compared with the United states Signal Service
barometer at Denver and with each other.
IL is hardly necessary for me to give you SPECIFIC
Instructions INST In regard TO your geological work.
You can pursue the methods and plans of last
year, modifying them as your experience may sug
gest to render the work more accurate. Very re-
spectlully, your obedent servant
+. V. HAYDEN, United states Geologist.
Mr. Gannett is also an old frontersman, and
likewise u graduate OF the Cambridge Scientific
School. He has been three years an explorer on
the Plains. Mr.. Wilson, commanding the third d.
vision, is from California, and brings to his work
an experience OF eight years. Mr.. James T. Gard
ner Is the geograpner, and Is charged with the pri
mary triangulation from which comes the skele-
ton map. Professor Gardner has long been known
to the scientific men OF the country as a devoted
servant Of science, and his work here in the West
covers period OF ten years. Besides the grand
divisions l have named Jackson's Photographic
party will push down to the borders OF New Mex
leo and take 500 negatives OF the new San Juan
mining region, about which we hear SO many fab
ulous stories. Becker's topographic meandering
party Will follow the course OF rivers, brooks and
roads, and there will be over 800 typographical
stations and within q radius OF i've miles. Peaks
and depressions will be taken by angles OF eleva-
ton and depression and by intersection.
Otner names equally distinguished will be found
in the following list OF the organization, but the
X. r. r. r. Will not walt for further details: -
DR. BAYDEN's PARTY.
DR.. +. v. Hayden, United States Geologist in
charge