Ohe 
Zeiss Photomicrographic Outfit 
For Ultra-Violet Light 
is a new and powerful instrument of research. Not 
only does it present a resolving power nearly eighty 
per cent. greater than can be attained with white 
light, but it gives most remarkable results in the 
optical differentiation of unstained and living tissues. 
Full particulars and prices on request. 
THE SGIENTIFIG SHOP 
ALBERT B. PORTER 
Scientific Instruments 326 Dearborn St., CHICAGO 
G. H. STOELTING 60. 
31-45 W. RANDOLPH ST., CHICAGO 
[THe E Reflecting 
__Lantern 
BOTANICAL APPARATUS and SUPPLIES 
—FOR— 
MOR PHOLOGY- - PHYSIOLOGY -- ECOLOGY 
SPECIALTIES: 
senagen GLINOSTATS, AUXONOMETER, WARDIAN 
ES, CLEMENT’S PHOTOMETER, Etc. 
———— ——— 
For shov — the ser 
reen, eeprom in books, engrav- 
ings, skeict * colored prints flowers and mechanical 
paene. all bri iiantly lighted in natural co The 
er the to show both opag wel econiaieery lantern slides, 
ri hates from one to the eee mes? _ ~Aageag 
oe 
we M manuf. lactir e Pr 
ing Npectronn pe scopes, Project- 
pes and Ls Ae 
tional and Scientific d’Lancern . eitento i egg ac st 
\ WILLIAMS, BROWN & EARLE. 
ept.24, 918 Chestnut St., Philadeiphia. 
ee 
