
ADVERTISEMENTS. 


Words; saar Use and Avun. By Wm. Matuews, LL.D. Twentieth 
editio Regine Cee on th, 504 pp. Regular price, $2. 00; with the GEOL- 
4.00. 
OGIST ré 
as agro oe Things. By Wm. Matuews, LL.D. Third edition, 1 
ba eet pp. Regular price, $1.50; with the GEOLOGIST for 
’ +60. 
anaes Bik Fisen Geology? By ALEXANDER WINCHELL, LL.D. Should 
y all teachers and those interested in educational matters. 
12m Aa Regular price, $1.00; with the GEoLoeIsT for 1891, 
Dickens Works; Faget set in twelve volumes; with the GEOLOGIST 
Mammoth Oretitadik es four volumes, 2176 pp., 620 illustrations; with 
, $4.00. 
EOLOGIST for 
dace el Precious Stones of North Amerf\a, By GEORGE F. Kun 
arge quarto, pp. 336, 8 colored plates # id numerous minor naan, 
ni rea gilt. ekira price, $10.4 . with the GEoLoGIST for 
1891, 
The Metallnsyy of Steel. By Henry M. Howe. “A notable ee 
tion to the literature of iron and steel metallurgy. oe Royal quarto, 
425 pp., cloth, gilt, aero a raeripians ` Regular price, $10.00; 
with the Grouoarst for 1891, $11 
Modern American Methods of Copper Smelting, By Dr. E. D. PE 
Se eco ond edition, large 8vo., 342 , illustrated. Regular price, rage 00; 
the GEO OLOGIST for 1891, 36.00 
p Ey Sopin and their Prevention. By SIR FREDERICK A. ABE 
ws povere coal mining in every state and rrer inen th 
the a Sta and those of Great Britain and Prussia, never 
before lenio N in accessible form. Large 8vo., pp.420, cloth. Reg- 
ular price, $4.00; the Gaskoaun for 1891, 86.00 
America Not Disco call by Columbus. A hifirical sketch of the dis- 
covery of America by the Norsemen in tenth ¢ By R. 
ANDERSON, A. M. 3d edition enlarged, žmo» cloth. giet price, 
$1.00; with the GEoLoGIsT for 1891, $3. 
Geology | erie he e. = Statigre hical. By Josern PREST 
In two volumes, with iiisteatons. 
Vol. eet paide al, Vol. II, Stratigraphical «a 8- 
ical. Regular orice for both volumes, $15.25. With the Spoon 
for 1891, $15.50. [See the advertisement of Macmillan & Co. i 
GEOLOGIST. 
Bien’s Atlas of the Metropolitan District and Adjacent Country. Unri 
valled as a specimen of the map-maker’s art. Just gar Scale, 
two inches es bei mile. “Sheets are 23 x 35 inches, the atlas being 
173g x 23 in Regular price, $20. With the agente for 1891, 
$20. [See ee et of Julius Bien & Co., in the GEOLOGIST. ] 
For these premiums money must be sent in advance, and in 
all Fary by postal order or note, or by express or draft on New 
Yor 
For public libraries this affords a rare opportunity to procure 
these standard works at reduced prices. e desire to extend the 
b- 
scription list is steadily increasing, and with the year 1891, which 
will be memorable in the history of American geology, because of 
we expect to see it doubled. We hope our old subscribers, to 
whom we acknowledge our re for numerous favors, will 
call attention to these offers for 
Bases AMERICAN Gee LS GEN sy 
SEPT. 18, 1890. MINNEAPOLIS, Miny. 

