INDEX. 47 
Gypsum formation, of Italy 18 
extent of 19 
boundaries of 25 
25, 26 
on the Canadian river i 
of Plaister Cove, N. 8 34 
Gypsum, on Red river X 
on Delaware creek — 16,18 
of the Andes 18, 26 
of Iowa 18, 26 
of Nova Scotia 18, 26 
fibrous 18 
used as glass 18 
quantity of 25 
composition and characters 32 
at Plaister Cove, N. 8 34 
quantity exported to United Birlik- ne. ia deoa pum er bite eiie A E SIRE a a RE. NOR RR 35 
origin of 35—36 
in California 
H. 
Hamilton, W. J 18, 34 
Helix 28 
Hitchcock, Professor - 25,31 
Hueco Pass, elevation of. 8 
Hueco mountains : 8 
geology of M RN -=-= 12 
Hueco Tanks — 15 
Hurrah creek AAA B ees 9 
i. 
dpt Ann. E n Re te 21 
Towa, gypsum ime vp 18 
Italy, gypsum A: of 18 
d 
Jurassic 17—18, 25 
L. 
* 
Los Cornudos 18, 15 
36,37 
arooentiferang 37 
Lignite 31 
; bó crystalline 12 
aen 12, 14, 26, 27 
for buildings , 30 
Time, caustic 27, 30 
Llano Estacado, description of 8 
8,9 
undulations 8 
extent 9,10 
rivers and streams " 
bluff borders 10 
geology 18 17 
fossils 17 
sandstone 17 
possibility of obtaining water on, by boring 22 
building stones 30 
