ADVERTISEMENTS. ttt 
N-OTIGES. 
Notices for scientific societies a private individuals inserted under this head free of charge. 
For business houses, two cents per w 
INERALOGY. — Course Rar gea ted b 
correspondence. First collection and 
k $1. Postage 25 cents. Kidega. 
VE GUTTENB 
DE Cmn High School, Pittsburgh, Pai 
wasp TED—To correspond with concholo- 
sts in America, especially i 
with a ti to exchange. 
cate 
Address Mrs. Falloon, Long Ashton Vic- 
arage, et: England. 
ANTED— Position in Academy, Normal 
or High School, as teacher of the Natural 
guag Latin taught 
, if necessary. Address G., box 441, 
Hanover, N. H. 
i COLLEGE PROFESSOR of Natural 
Sciences and Ge 
many, is open for a position in a college. 
ces, 
Address, C., Box 136, New Berlin, Pa. 
For EXCH ANGE —14 Volumes (1883- 
1889) AMERICAN JOURNAL OF Te 
10 volumes (1880- 
879- 
' n good condition aa pone’ 
co Morris Typewriter. If you have a good 
croscope, » Camera, oF Ss dun: else to offer, 
ER CHADBOURN, LEWISTON, ME. 
OR SALE.—Beautiful sets of Fossil Plants 
from the Dakota Group Cretaceous. On 
receipt of $3.00 I m forward, prepaid, to any 
address in E 
and varieties of Dakota Plants. Send 5 “cents 
for plate illustrating the set. The specimens will 
equal the figures. CHAS. H. STERNBERG, 
P. O. Box 60, Lawrence, Kans. 
ANTED—Hall’s works on Paleontology, 
and other works giving plates which show 
fossils of the Niagara E Address M. D. 
Sullivan, St. Ignatius College, Chicago, Ill. 
OLUMES 1., II., IIL, and IV., of THE 
AMERICAN NATURALIST, in first-class 
dition, bound in half M 
$16.00 
AY 
25 Sone St, neon Mass. 
TANTED—Fo or dissection ak microscopic 
work, Doig dow Mpa! Shean y oher 2 pews 
zoa, Actinoz 
mata and M exchange gi 
J A: PASA "Trinity College, Toronto, oR 
Fie EXC een species of Union. 
ide from Sp riv ; the finest in the 
ne Helices ne gi land shells. 
irds’ 
INERALS TO EXCHANGE for others. 
JOHN HOLL. ROLLO, 
Wilmington, Delaware. 
First-Class Histological Mounts 
at European Prices. 
25 cts. each. 
Wm. N. BeEGscs, M.D, 
nstructor of Histology in the St. Louis Med. College. 
2207 Sidney St., St. Louis, Mo. 
4 
- 
New York, Kingston-on-Hudson. 
Gotpen Hitt Scuoot, 
A Preparatory School for Boys. 
$450 Per Annum. 
JOHN M. CROSS, A.M., Principal. 
