48 
HISTOLOGY OF VEGETABLES. 
of the stellate form, while those in the phosphoric acid 
No acicular crystals, however, 
were formed although the pro- 
cess was continued for ten days. 
One of these pieces of Rice- 
paper exhibits very clearly a 
stellate mass of crystals in some 
of the cells. Each of these, as 
shown in Fig. 33, precisely re- 
sembles the raphides found in 
Portion of Rice-paper, in T>] 11 ,} )nr } ) 
which are two masses of ra- H'Wuulu u. 
phides produced artificially. Raphides are sometimes found 
in the fossil state. In a section of a fossil palm, from 
Saugur, in the Deccan, a stellate mass, evidently of a 
crystalline nature, occupies nearly the whole of the in- 
terior of some of the larger cells. 
were rhombohedral. 
FIG. 33 . 
