Queen & Co., 
Microscope Makers, 
PHILADELPHIA. 
gg MAGNIFYING GLASSES, (cscs: 
BEST ACHROMATIC TRIPLET, (s5 
PLANT PRESSES (and Paper). 
BOTANICAL COLLECTING CASES, : 
GRAY'S BOTANICAL HIOROSEPE 
THE “ AGME" "WIGROSGOFES 
oRAY'S MANUAL, (sess eeecoumenmuatea) 
#-Send for complete Catalogue B - QUEEN & C0., Philadelphis 
Henry Heil Chemical Co 
ST. LouIs, MoO. 
chemicals and Apparatus 
LABORATORY 
SUPPLIES 
coat 
GIVE US A TRIAI. YOU WILL FIND US PROMPT ADE” 
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Before Ordering Elsewhere, Get Our Quotat 
Large Iilustrated Catalogue on Application. : 
