iimou 
— :iui)ii, or uii«uuu ui 'w■!in|> are;is ””i - "^TBHT^nti • 
ent accuracy to be used in tlie publication of maps on a 
rfjjig (j inch=one-half mile), with a contour interval of , 
>r 10 feet I 
burvef- of areas in -which there are problems of average 
2 importance, such as most of the basin of the Mississippi 
Its tributaries, are made with sufficient accuracy to be used I 
s publication of maps on a scale of jgss (1 inch= nearly . 
f), with a contour interval of 10 to 25 feet. jv. 
purveys of areas in which the problems are of minor j 
importance, such as much of the mountain or desert M • 
of Arizona or New Mexico, are made with sufficient 
cy to be used in t he publication of maps on a scale of £ 
inch=nearly 2 miles), with a contour interval of 25 to 
et. L H .!•■■■ 
typographic siu’vey of Alaska has been in progress since 
and nearly 37 per cent of its area has now been mapped. 
10 per cent of the Territory has been covered by recon- 
|nce maps on a scale of or about 10 miles to an 
Most of the remaining area surveyed in Alaska has 
mapped on a scale of but about 4,000 square miles 
ten mapped on a scale of —^ 
:mt half’ of the Hawaiian Islands has been surveyed, and 
mlting maps are published on a scale of 
Y features shown on these maps may be arranged in three 
(1) water, including seas, lakes, rivers, canals, swamps, 
ither bodies of water; (2) relief, including mountains, 
(valleys, and other features of the laud surface; (3) culture 
s of man), such as towns, cities, roads, railroads, and 
»;w 
P’lB 
•Mopq amisy aq} ur imoqs si apmS prjj! 
‘uuqj ‘apitjppj ssaidxa souq juoiuoo qatq.w m jaurrem aqxj 
hit* 51! jaipeSoj otu 4i?tp souq pu« iadojs daa}s v aj.l 
i "IP 11 ! Joipoifa} aeop am jeqj souq .‘adopt apuaS a apwipm d * 
no jradti aaj am }t?q} sauq .mojuon aAtssaoong "eprqr. 
.xiaqr si? qaw sb ‘sAaquA pun ‘suimunoui ‘sqtq aq} jo adijqs a, 
woqs sauq JnojuoQ qaaj 0Z asp p I noqs aas aq} jt anq aio 
et P af l Pl n0M • m °f 1100 lyoj-OS aqx -pAai Has iraamSmaq ap 
-lqv; jo o.iaz .10 mrrjBp aq} ‘jno}noo u si jpsqt ?SBODBas aq} jo a? 
oifq. -runoqs aiB apnjpp jo sjBAjajnr .mpiifar uispao }b sail 
-uoo aip A’fno aapawd ni mq ‘apippp Aire }b luiKjp aq ppn 
aur| b tpngj ‘[OAaj uas aAoqu aprqpp? auras aip }b si qoqjM j 
pad a.ioao (jno}noa v) puno.iS aq} uo anq a.ibuiSbiui ub sjii , 
-aitfej anq jnojuoo y sanq .mopioa aip jo nopB^aidrajni ai 
ni SutpiB smp pun jaqaa jo aormreaddB aq} SuiajS jq asodm 
aq} joj ‘payiasajdaj Ben; aq} ssojdb }soa\ q}.iou aq} iuo.ij nAio.id 
}qis'q jo }aaga aip .tmi.woqs ihtqreqs Aq pepiaurajddne am sdei 
aiuos no qaiqw ‘uMojq ui sanq jnoiuoa Aq iiAioqs s; jaqaq- 
saqssp pim s}op aiqq jo sauq Aq UMoqs a.m—.maA at 
jo }.md a§jB[ b joj Aap ajB spaq asoqw asoip—sumacs }ua}}nj 
-.iajuj }up aiqq .to Snuiq .ia}t?M anqj A‘q uas aq} puB ‘saquy at 
‘stniiaqs .iaS.m[ aq} pus sauq aiqq aphris Aq sjinma pim sureaj:, 
jaqBtns aip ‘atqq tit paptasajdat ajB sajrpwj .ia}BM aq} qy j 
•scIbui |BToedb’ auref 
no pa} uesajdai a.m sampsaj [Bnopippc pun ‘sdtuu .raipBa a urn 
no .mad iIb suopBUB^ ’Mopij paupqdxa pim UAioqs ojb sa.tn}Ba 
asaip }uasardat o} pasn suSis jBnopuaAiioo aqx -sauepunot, 
-— ^ 
.nap are printed tlie. names of adjoining qnadrangl 
Idi maps have been published. Over 3,000 quadrangle 
Llnitod States have l»eeu surveyed, and maps of ti 
lie io the oin • other side of this sheet have 
’Me topographic map is the base on which the geology 
eval resources of a quadrangle are represented, ami 
■ showing these features are bound together will 
iftext to form a folio of the. Geologic Atlas ot the Un 
tes. "More than 200 folios have been published. [ 
ndes maps of each State and of Alaska and Hawaii-shu J 
Seas covered l>y topograpbic umps and geologic folios |l 
led by the United States Geological Survey may be obtej 
h Copies of the standard topographic maps ntay be obtaj 
10 cents each; some special maps are sold at dilTcreui pr 
discount of 40 per cent, is allowed on an order for a 
ounting to #5 or more at the retail price. The geol. 
ios are sold for 25 cents or more each, the price depcm 
the size of the folio. A circular describin ' J 
rim 
f R M R 1, a 
bent on request. .. >• ‘ . 
Applications for maps or folios should be acco , 
Ai, draft, or money order }not po tage stmups) and sbou'i 
Iressed to 
THE DIRECTOR, 
United, States Geological Survey , 
Washington, D 
^.T.rMa, stiit jo .sjvt .rmijvm Vanuary, 1924. 
i: 
