229 PRINCIPLES OF BOTANY, &c¢: 
produce a change in’ the parts! of a bedy, ‘which 
without . ane fot have taken: place” 
Sensil , (sensilitas), when the ‘stimulus of one 
part alt coumnbniared to ail the organs, so as to 
produce'a sensation of the stimulus of that’ part/in 
Vitali power, (vita pion) or the power by 
which the circulation of the sap is promoted * if'1s 
this power which supports the growth, final forma» 
tion, and all the functions uss the machine. 
‘The formative nisus, (nisus formatidus), is the 
power by which lost of injured’ parts’ are’ restored, 
and which preserves their origitial form”. 
§ 226: 
All those powers appear in the animal kingdom, 
more or less distinctly, and even ‘in plants are not 
altogether wanting. 
Elasticity is pec a to the wood, branches, 1 leaves, 
seed -vessels, a nd other parts of plants. It appears 
éven aiter’ their are and is still to be found in 
eums, tesins, and other vegetable substances; in 
them, however, 1t does not exist im the samie de- 
gree after their decay as during life. 
Contractilit oye hich plants possess principally dur- 
ing life, remains in a great degree, even aiter they 
* The expression formative nisus is used here in its more 
extensive signification, for that power, which produces: and 
preserves the original form of things, and reproduces such of 
their parts as they have lost by accident. Cf. Blumenbach, 
on Generation. Goettingen, 1791. 
die, 
