Those wishing good herbarium specimens will find it m 
convenient to send their lists of desiderata to 
SANDBERG’S BOTANICAL EXCHANGE BUREAU. 
$7.00 per hundred. Satisfaction guaranteed. 
Address ay H. eee bide i Mim. 
Ol CENTR 
Henry Heil Chemical Co 
21 LOUIS Maw 
a 
hemicals and Apparat 
LABORATORY 
| SUPPL 
GIVE US A TRIAL. YOU WILL FIND US PROMPT AND 
Before Ordering Elsewhere, Get Our Quotations. 
Large Iilustrated Catalogue on Application. : 
tg BY PROF. C. R. BAI 
000 Sold in One Yor 
Bitiscer ‘& LOMB opt 
Rochester, N. ¥. 
