216 THE VEGETABLE WORLD. 
plants, comparing them with European species, thus giving us a 
means of pointing out more precisely the genera, tribes, and species 
of each natural family. Monographs of a great number of such’ 
families have this been traced with profound patience. The study’ 
of the formation and evolution of organs; the discovery of the’ 
aac antivir anendlasiors seeps eceenedlalllttallianslinliin gibbons 
aig Sot 
7 aff 4 
EL fp pel 
i x uf Af) f 
4 f 
Fig. 293.—De Candolle. 
true mode of reproduction in cryptogams, still unknown in Des 
Jussieu’s time ; that of inflorescence, of the ovules, of the embryos: 
of the fruits, have furnished elements for perfecting the limits 6" 
families and advancing natural classification.’ . 
Auguste Pyramus de Candolle is one of the botanists of th a 
