The Barre daily times. (Barre, Vt.) 1897-1959, 1917-02-26
NEW MAP OF WASHINGTON.
Shows an Area of 4os Square Miles with
Varied Topography.

United states geological survey, of thu
department of the interior, is now ready
for distribution. This new map is tn,
result of recently completed Topographic
surveys, and is typical example of thu
art of map making as it has been refined
and developed by the geological survey
after more than a generation of study
and experience. The map was actually
drawn in the field by the surveys top.
ographic engineers and represents the
highest accuracy and refinement that can
be attained in a map printed on the scale
used.
1t shows an area of 465 square miles,
which includes almost every form of to-
Biography, from the lowlands along the
Potomac drive to the broken country in
Rock Creek park and the picturesque
gorge OF the Potomac above. the city.
The map is in four colors. Black is used
to represent works of man-such as rail-
roads, wagon roads, and houses; blue is
used to represent streams and water sur
faces; and brown is used for the curves,
showing elevation, which represent, al
most like a photograph, every up and
down in the area. The automobile edi-
of all the ear-round good roads in bright
red and conencting links in dotted red
lines.
A distance OF two inches on the snap
represents one mile on the ground-that
is, the scale is To 81 $50, one inch on
the map corresponding to 81 $50 inches
on the ground, The relative heights are
shown by curved contour lines drawn to
represent heights above mean sea level
at intervals OF 10 feet.
A Bargain in Maps.
The Washington and vicinity map is
printed on paper OF good quality and
measures A by So inches. 1t price is %
cents retail, or Is cents each in lots of
so or more, and it may be obtained from
the director of the United States geolog-
ical survey, Washington, d. G.. Every
American citizen should certainly look
forward to visiting his Capital city. and
the acquisition of this map is undoubted-
ly good first step in planning such a
trip.
The difference between the Topographic
map issued by the geological survey and
the ordinary map is that the survey map
is made on the ground-the map is made
and practically completed in the field
whereas an ordinary map is compiled at
a drafting table or desk.
10 Per Cent of the United States Mapped |
Beginning nearly 40 years ago to con- |
struct accurate topographic and geologic |
maps of both the known and unexplored |
regions of the United States, the geoiog. |
zeal survey has steadily progressed with
This part Of its work until topographic |
maps of 40 per cent of the country are |
now published, besides maps for large |
areas in Alaska and Hawaii. Extensive |
ireas have also been covered by geologic /
maps and all the work from the begin
hing of the field survey to the printing
VI the finished map is done by this gov
bureau. Other activities of the
survey are the classification of public
ands, the annual collection of mineral
tatisties of the United States, and in
of the nations water re-
ources; all involving the publication of
cientific and technical reports contain
ng over 10000 pages annually.
During the last 30 years over Sl5,000,-
100 has been spent by the geological sur
ey in geologic and topographic surveys
n the United States. Last years expen-
iture was nearly 100000, not to men
ion the cost of engraving the copper
lates and printing the maps in from
hree to 20 colors.
Map of the World
Part of the geological surveys map
ing comes under a plan for an interna
ional map-a map of the world on the
cale of IL 000,000-the American por !
ion of which shall be uniform in scale
nd symbols with those representing
reas on the other continents. The spe-
al map production under this plan is :
eing supplemented by the issuance OF I
ate maps on the same scale, which is !
bout l6 miles to the inch, and also ON
ale twice as large. All these topo- l
raphic maps are sold to the public at a
light increase over the cost OF paper and j
rinting, the nominal price charged TAX
z no account of the heavy initial eN I
snses of field surveys or the expense OF :
lgraving the copper plates and prepar- :
g for color printing.
The geological survey thus keeps in
ock for sale some 4.600,00G copies of
500 different maps. These topographic
APPS show with great accuracy all the
ltural features of the country and man
tilt structures. Perhaps their most
,table feature is the countour lines,
hieh are graphic representations OF the
nd surface mountains, slopes. valleys,
pressions-every inequality which the :
e observes on the ground. Each map
among other things, real dictionary
attitudes of the area II covers. The
ice OF the standard topographic map is
cents. although the field survey OF the
ca represented may have cost 5000 or
900.
The geological survey has index maps
r each state. Topographic surveys
We been made in every state, and il is
ely that there is a map including your
N home. Send for the index. which j.
e, and this viii show YOU whether
ere is a map or geologic folio OF your
n region. The standard topographic
Ip mot the index Is 10 cents copy, "a
d the geologic folio p cents. A dis- la
ant Of 40 per cent is given on orders 10
to s. at the retail price. \.