1908-9.] Life and Chemical Work of Archibald S. Couper. 215 
“ f H 
C l 0— OH 
H 
0— OH 
|H 
0— OH 
Glucose. 
H * 
C O OH 
H 
cl 
H 
C OH 
H 
C 
0 Oil 
H 
c 
c 
c 
H 
0— OH 
L 
0— OH 
(H 
' 0— OH f 
C 0— OH 
H 
C 
0 OH 
H 
VO OH 
H 
C 
C 
c 
j 
c 
" O ' OH 
Ii 
OH 
•H 
OH 
H 
•OH 
• H 
P • OH 
•••■H 
O ' OH 
C- 
H 
O "OH ” 
C 
OH 
H 
OH 
Couper s formula for tartaric acid is, if we put 0 = 16, identical with our 
structural formula for that acid, as here Couper distributes the two acid 
hydroxyls to the two end carbon atoms. 
u 
C < 
c < 
c < 
j 0— OH 
( O 2 
( H 
i 0— OH 
j O— OH 
I H 
()2 
Tartaric Acid. 
(j""() " OH 
... 0 2 
C OH 
—O 
c 
c 
c < 
) O-OH 
n 
—H 
—0 OH 
—o OH 
" H 
•o 2 
—o OH 
c 
"H 
•OH 
C 
c 
"OH 
"H 
—0 
—OH 
* In tliis formula the dotted lines joining the six carbon atoms have been omitted in 
the paper. 
t Misprinted “ H ” for “ 0 — OH.” 
