

ADVERTISEMENTS. 




NW PDCES: 
Notices for scientific societies and private individuals inserted under this head free of charge. 
For business houses, two cents per word. 

INERALOGY. — Course conducted by 
correspondence. First ale and 
Postage 25 cents. dres 
sUSTAVE GUTTE NBERG, 
Central High School, Pittsburgh, Pa. 
book §r. 

ANTED—To correspond with cònch olo- 
British land, 
arine dupli iis some for- 
eign. Mrs. Falloon, Long Ashton Vic- 
arage, Bristol, England. 

ANTED—Position in Academy, Normal 
High School, as teacher of the Naturati 
ai and Modern Languages. Latin nap 
in addition, if necessary. Address G., box 44 
Hanover, N. H. 

COLLEGE PROFESSOR of Natural 
Sciences and German, of four years ex- 
rege ee and special Biological training received 
t the Universities of Leipzig and Bonn, Ger- 
ial is open for a position in a college. Good 
references. 
Address, C., Box 136, New Berlin, Pa. 

OR EXCHANGE.—14 Volumes (1883- 
also, Morris lag 
HADBOURN, LEWISTON, ME. 

OR EXCHANGE—Thirty species of Union- 
ide from Spoon river, Ill. ; the finest in the 

world e Helices and other land shells. 
Fifty species of birds’ eggs in full sets; Indian 
stone and flint implements. WANTED, shells, 
d scientific literature, 
W. S. STRODE, BERNADOTTE, ILL 

ANTED—Hall’s works on Palzontology, 
and other works giving plates which show 
fossils of the Ni ddress M.D. 
Sullivan, St. Ignatius College, ‘Chicaes, Til. 

mata peer N 

OR SALE.—Beautiful sets of Fossil Plants 
from the Dakota Group Cretaceous. On 
shen of daa I Eps forward, piepaid, to any 
d 

aa: varieties of Dakota Plants. Send sà ents 
for plate illustrating the set. The specimens wil 
equal the figures. CHAS. H. STERNBERG, 
Box 60, Lawrence, Kans. 

INERALS TO EXCHANGE for others. - 
HN HOLL. ROLLO, 
Wilmington, Delaware, 

it Be E, if., TEL; and Iy., of THE 
RICAN NATURALIST, in first-class con~ 
dition, wend in half Morocco, for sal ce 
$ Address GEO. W. MACKAY, 
25 Congress St., Boston, Mass. 
ANTED—For dissection and microscopic 
vane, orb (a: Jelly-fish, wi oher Hpo 
zoa, Acti 

usca. Cash or exchange given. 
FA ion. Trinity College, Toronto, Can. 

HE August Number of the North American 
Review will contain articles on the Jewish 
e attempts to show that the an 
brews in Russia is due to social and economi, 
rather i uses; 0 e 
ral Teacher, by Oak on 
will also contain a very re- 
markable article by Mr. Dana, the editor of the 
Sun — the extraordinary experiences of 
a spy w ployed by the War Depart- 
ment i his tenure of office as Assistan 
Secretary of War. 
