110 
PUBLICATIONS  OF  U.  S.  GEOLOGICAL  SURVEY. 
[BULL.  177. 
Special  maps  of  exceptional  economic  importance,  (a) 
Locality. 
A spt-n,  Colo 
Banner  Hill,  Cal 
Butte,  Mont 
Crater  Lake,  Oreg.  (with  descriptive  text  dorso) 
Cripple  Creek,  Colo 
Franklin  Furnace,  N.  J 
Genesee,  Cal 
Grass  Valley,  Cal 
Helena,  Mont 
Hot  Springs,  Ark 
Indian  Valley,  Cal 
Menominee,  Mich 
Mother  Lode  district,  Cal.,  I 
Mother  Lode  district,  Cal.,  IT 
Nevada  City,  Cal 
Rico,  Colo 
Shasta,  Cal 
Taylorsville,  Cal 
Tenmile  district,  Colo 
Tintic,  Utah 
Tintic  (mining  map),  Utah 
:%00 
:  14400 
: 15000 
:  62500 
:  25000 
: 14400 
: 31 680 
: 14400 
:  62,500 
:  62500 
:  65500 
: 62500 
: 63360 
: 63360 
: 14400 
: 23600 
: 62500 
: 31680 
:  31680 
:  62500 
:  9600 
Price. 
Contour 
interval. 
Single 
100  or 
more. 
Feet. 
25 
20 
20 
100 
50 
10 
50 
20 
50 
20 
100 
20 
100 
100 
20 
,50 
100 
50 
100 
50 
20 
Cents. 
5 
5 
10 
5 
5 
5 
5 
5 
5 
5 
5 
5 
5 
5 
5 
5 
5 
5 
5 
5 
10 
Gents. 
2 
2 
4 
b  5 
2 
2 
2 
2 
2 
2 
2 
2 
2 
2 
2 
2 
2 
2 
2 
2 
4 
Forestry  m< /)>.<<. 
Mount  Marcy  and  Vicinity 1 :  62500 
Seattle,  Wash |      1 :  125000 
Tacoma,  Wash '     1 :  125000 
20 
20 
50 
5 
50 
5 
aThe  Survey  has  issued  a  sheet  of  "Conventional  signs 
5  cents  a  single  sheet;  2  cents  each  in  lots  of  100  or  more. 
b  No  wholesale  rate  for  Crater  Lake  sheet. 
cNo  wholesale  rate  for  forestry  maps. 
used  on  its  topographic  maps;   price, 
TOPOGRAPHIC  FOLIOS. 
The  map  sheets  represent  a  great  variety  of  topographic  features,  and  with  the  aid 
of  descriptive  text  they  can  be  used  to  illustrate  topographic  forms.  This  has  led  to 
the  projection  of  an  educational  series  of  topographic  folios,  for  use  wherever  geog- 
raphy is  taught  in  high  schools,  academies,  and  colleges.  Of  this  series  the  first 
three  folios  have  been  issued,  viz: 
1.  Physiographic  types,  by  Henry  Gannett.  1898.  Folio.  Four 
pages  of  descriptive  text  and  the  following  topographic  sheets:  Fargo 
(N.  Dak. -Minn.),  a  region  in  youth;  Charleston  (W.  Ya.),  a  region  in 
maturity;  Caldwell  (Kans.),  a  region  in  old  age;  Palmyra  (Va.),  a 
rejuvenated  region;  Mount  Shasta  (Cal.),  a  young  volcanic  mountain; 
Eagle  (Wis.),  moraines;  Sun  Prairie  (Wis.),  drumlins;  Donaldsonville 
(La.),  river  flood  plains;  Boothbay  (Me.),  a  fiord  coast;  Atlantic  City, 
(N.  J.),  a  barrier-beach  coast.     Price,  25  cents. 
