PHYSIOLOGY. 295 
. compound ones, as we shall afterwards find, (§ 228). 
After the clipping of the willow, the sap merely 
ascends from the soil, and acts upon the inner bark, 
(liber), by which means the buds are evolved and 
erow up to branches. , But if we cut off the top of 
a palm it decays, being a.simple plant, and we give 
up all hope of reproduction. ‘This function mani- 
fests itself more distinctly in the bark of shrubs and 
trees, which are not of a resinous nature, and heals 
their wounds when not of too great a size. We 
are therefore intitled to maintain with all justice, 
that the power of reproduction exists in a far in- 
ferior degree in the vegetable than in the animal 
kinedom*. 
ve Gongs beet 
As all those powers, now enumerated, are pecu- 
liar to organized bodies, we may previously con- 
clude, that a.certain likeness exists’between animals 
and plants, which certainly. cannot be altogether 
denied. The incomparable Bonnet has some very 
ingenious observations on the eggs, the embryos, 
- 
* A most remarkable phenomenon takes place in the leaves 
of Aristolochia $7640, which might be considered as a reproduc- 
tion; it doesnot, however, appear to be so, nor has it yet been 
explained. We find in the’ leaves of this plant not unfre- 
quently irregular sutures, as if made by art, where the upper 
surfacé of the leaf is turned towards the under surface. 
What can this be? It does not appear to be produced by 
insects. Iam sorry I have not been able, for want of a gar- 
den of my own, to make some experiments to ascertain the 
point. < | 
ee . and 
