148 THE CHEMISTRY OF THE PLANT 
Glucosides. 
Amygdalin 
C 20H27NO 11 
Solanin 
CosHizNOu 
Saponin 
C 32H 520 17 
Coniferin 
C 1 6H220 8 ‘ 
alkalies and in the form of 
monosaccharids produced on 
hydrolysis. We can distin- 
guish the celluloses proper (in- 
soluble in weak acids and 
alkalies, but soluble in am- 
moniacal copper oxide solution 
and hydrolyzing with diffi- 
culty) and the hemi-celluloses 
(reserve celluloses are of this 
type), pectoses, etc., with all 
gradations to the plant gums: 
which are pectic in nature and 
soluble in water. 
These are compounds of glu- 
cose with various other, often 
not, closely related, substances 
from which the glucose is set 
free by the action of enzymes 
or acids. The most important 
are: 
This occurs in the leaves, bark 
and kernels of peach, bitter al- 
mond, cherry, etc. Under the 
influence of the enzyme emul- 
sin it breaks up into d-glu- 
cose, oil of bitter almonds 
(CsH;—CHO) and hydrocy- 
anic acid (HCN). 
In green portions and seeds of 
the potato and other Solana- 
ceae. 
In soap bark (Sapindus) and 
many other plants. 
In young wood of Conifers 
(see below under hadromal for 
discussion). 
