ee ae ee ee 

ADVERTISEMENTS. 
Tet; their Use and Annas: By Wm. Matuews, LL.D. Twentieth 
gong Fer aa Pe 4 pp. Regular price, $2. 00; with the GEoL- 
alae 
Men, Places ia Things, By Wm. Maruews, LL.D. Third edition, 1 
vol., on 394 pp. Regular price, $1.50; with the Gro.oagisr f 
1891, 
= We Tench Geology? By ALEXANDER WINCHELL, LL.D. Should 
be read by all teachers and those interested in educational matters. 
Sy — ‘ick 1. Regular price, $1.00; with the GroLogisr for 1891, 
Dickens Works: ene set in twelve volumes; with the GEOLOGIST 
Mammoth “Cyclopedia a hig OA 2176 pp., 620 illustrations; with 
4.00. 
OLOGIST for 
on, pieg Precious Stones - North Amerf\a. By GEORGE F. Ktnz. 
Large quarto, pp. 336, 8 colored plates# d numerous minor engrav- 
a pipe gilt. Regular price, $10.4 . with the GEOLOGIST for 
The Metallurgy of Steel. By Henry M. Howe. “A notable convribu- 
e literature of iron and steel metallurgy.” Royal quarto, 
os. oo dlat th, gilt, profusely oe Regular price, ‘$10. 00; 
with the GEOLOGIST for 1891, 
ceo i Seen Methods of corer Sealine, By Dr. E. D. PETERS. 
Second edition, large 8vo., 342 , illustrated, Regular price, $4.00; 
with ‘hie GEOLOGIST for 189 1, 86.0 
Mining Accidents and their Prevention. By SIR FREDERICK A. ABEL. 
With the laws governing coal mining in every state and beraie in 
the ate States, and those of Great Britain and ssia, never 
before collected in a form. Large 8vo., pps 420, siete Reg- 
ular price, $4.00; wi e GE EOLOGIST for 1891 , $6.00. 
America Not Discovered “sh Columbus. i. historical sketch of the dis- 
covery of America by the Norsemen enth ¢ ; yR. 
ANDERSON, A. M. 3d edition enlarged, 12m0» sioth. piki apre 
$1.00; wi ith the GEOLOGIST for 1891, $3. 
sores a ee hp ea oR Stratigraphioal By JOSEPH PREST 
n two volumes, with iustrations, 
Vo a pe T pei ri fare! es a "Vo EIR gage hy. papt and Phys- 
l. Regular price for both volumes, $15.25. Wi e GEOLOGIST 
for 1891, $15.50. [See the advertisement of Macm{llan & Co. in the 
GEOLOGIST. ] 
Bien’ 42 ng x ss Szepen ne and Adjacent Country. Un 
of them pens hog Just published. Seale: 
Mesa tothe | file: Sheets are 23 x 35 inches, the atlas being 
174g x 23 inches. Regular price, $ 390. With the GEoLoGIsT for 1891, 
$20. [See aivertisenient of Julius Bien & Co., in the Gro.oatst.] 
For these premiums money must be sent in advance, and in 
all ere by postal order or note, or by express or draft on New 
Yor 
Tor public libraries this affords a rare opportunity to procure 
these standard works at reduced prices. We desire to extend e 
GroLocIsr to all scientific libraries and laboratories. 
scription list is steadily i increasing, and with the year 1891, As 
will be memorable in the history of American geology, because of 
. 
> eX to 
whom we acknowl our obligation for numerous favors, will 
edge 
an attention to these offers for 1891. 
THE AMERICAN GEOLOGIST, 
