v: ADVERTISEMENTS. 
BETTER THAN EVER BEFORE. Le se. i Sagie zs Sand Die o New Type. 
Cisse OBSERVER 
A medium of interchange of observations for all fnature. Devoted to ali departments 
of nature pho 
nal, inter restin Don’t fail to try it for 1891. 
E. F. BIGELOW, Editor and Publisher. Only i cents a yea = ances 
‘Keep your e ae ”” (to observe the won 
poya Enrrors : and Feauini a the out-deor world) is the motto of 
M. A. Boot, F. R. M. S., Microscopy, Longmeadow, 
oun H. SAGE, Ornithology, Portlan d; Conn. [Mass. THe OBSERVE 4 £14 
A. PEARSON, Entomo ogy, Norwich, Con woods ; are on re nc in Minds, oe be ct, 
Miss C, ANTOINETTE SHEPARD, Foar : rocks, è ave you a microscope? Then you wi 
New Sritain, Conn. be pa = Tue OBS 
Addrss, E. F. BIGELOW, Publisher. 
THE OBSERVER, No. 5 Waverly Ave., Portland, Conn. 
ESE ESS ON al es aca gaan 
“THE SANITARIAN 
Is the best Sanitary publication in America” (Mississippi Valley Medical 
Monthly); ‘‘ Easily maintains its superiority over all similar publications” 
(Medical World) ; and ‘“‘ Has accomplished more good than all of the other 
Sanitary papers put together’? (Hydraulic and Sanitary Plumber). “The 
Editor, Dr. A. N. BELL, is well known to the mercantile community for his 
co-operation with the merchants in quarantine reform, and to his profession as 
a leader in Sanitary Science ” (Wew York Journal of Commerce). 
96 PAGES TEXT MONTHLY; TWO VOLUMES YEARLY. 
mps). 
in advance; 35 cts. a Number. i copies, 20 cts. (ten two-cent postage stamps) 
$4.00 a yea 
All DET D should be ELS to the Edito 
113a SECOND PLACE, BROOKLYN, | N. Po 
FORS SALE. 
Twenty different specimens of fos- 
sil plants from the Dakota Group 
Cretaceous will be sent to any ad- 
dress on receipt of $2.50. 
Send stamp for plate illustrating the set 
and list of roo specimens. 
CHAS. H. STERNBERG, 
P. O. Box 60, LAWRENCE, KANSAS. 
Betulites vestit, vat. ovalis Lx. 
