CHEMICAL COMPOSITION OF THE STEM. 207 
juice bright olive green, perfectly colorless after precipita- 
tion by the subacetate. 
The lower joints (always excepting the one which grew 
immediately above the surface of the ground) differ little, 
if at all, from the middle joints. The specific gravity of the 
erude juice from all parts of the stem is about the same, 
averaging 1°073, or about 10° Beaumé. 
No portion of the stalk of sorghum cane should be re- 
jected except the two or three upper joints, which contain 
but little juice. 
10. CHEMICAL CoMposITION—THE STALK. S. cane.— 
Avequin analyzed the fresh Tahiti and ribbon cane of 
Louisiana ; Depuy, the fresh cane at Guadaloupe; Peligot, 
by combining the composition of cane juice with that of the 
dried canes sent him from Martinique, has also deduced the 
composition of fresh cane. The results of these analyses 
are compared with those of the stalk of sorghum (Chinese 
cane), made by Prof. J. Lawrence Smith and myself. 
SOUTHERN CANE. 
Dupuy. Peligot. Avequin (Louisiana). 
Tahiti Cane. Ribbon Cane, 
se BEI ee ere 17°8 18-0 14-280 13-392 
MY, DNC evs2-c.~ccccce sicaseose 9°8 9-9 8-867 9-071 
Mucilaginous,resinous,and 
albumindus matter sua} 0-4 —— 0-773 0-809 
salts, 
PU tetedavcnennsaen| Gedences sxcsss 72:0 72°1 76-080 16-729 
100-0 100-0 100-000 100-000 
SORGHUM. 
Smith. Stewart. 
NIE a deetavaaan sore en ath ada sacterendatadanesoes sis ssascodes 12:0 14:5 
Woody fiber, albumen, and Salts............csccccscsees 12-4 12°5 
MEN ada saccade tweeserees na ban vancdes cle es cou ode bicugocse 75-6 73-0 
100-0 190-0 
