wv. 5. DEPARTMENT OF AGRICULTURE. 
. DIVISION OF ENTOMOLOGY, 
| BULLETIN No. 9. 
fe os E 
MULBERRY SILK-WORM, 
BEING A 
MANUAL OF INSTRUCTIONS 
IN 
Pee CULTURE. 
BY 
C. V. RILEY, M. A., Pu. D. 
SEVENTH, REVISED EDITION. 
WITH ILLUSTRATIONS. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
‘ 1888. 
: 16136—No. 9 
7 
