■ißt 
# 
-3- 9 < 9 . ,/ Q 
.lüLar 
P 
Jfarbarü College Htörarg 
FROM THE BEQUEST OF 
' DANIEL TREADWELL 
« 
Rumford Professor and Lecturer on the Application 
of Science to the Useful Arts 
1834-1845 
DEPOSITED 
IN THE 
BIOLOGICAL LABORATORY 
