A 
PRACTICAL TREATISE 
ON THE 
BY 
L. L. LANGSTROTH; 
WITH 
AN INTRODUCTION, BY REV. ROBERT BAIRD, D. D. 
THIRD EDITION, 
&EY18KD, AND ILLUSTRATED WITH 8EVENTY-SEYEN ENGRAVINGS. 
NEW YORK: 
C. M. SAXTON, BARKER & CO., 25 PARK ROW. 
SAN FRANCISCO: H. H. BANCROFT & CO. 
1861. 
