LAMARCK. SP LHEORY JOR “DESCENA | 325 
only certain animals and man are endowed with this 
singular faculty, ‘“which consists in being able to 
experience zzternal emotions which provoke the wants 
and different external or internal causes, and which 
give birth to the power which enables them to per- 
form different actions.” 
“The nervous fluid,” he says, “can, then, undergo 
movements in certain parts of its mass, as well as in 
every part at once; moreover, it is these latter move- 
ments which constitute the general movements 
(gbranlements) of this fluid, and which we now pro- 
ceed to consider. 
“ The general movements of the nervous fluid are 
of two kinds; namely, 
“1, Partial movements (¢branlements), which finally 
become general and end ina reaction. It is the move- 
ments of this sort which produce feeling. We have 
treated of them in the third chapter. 
“2, The movements which are general from the 
time they begin, and which form no reaction. It is 
these which constitute internal emotions, and it is of 
them alone of which we shall treat. 
“But previously, it is necessary to say a word 
regarding the feeling of existence, because this feeling 
is the source from which the inner emotions originate. 
“On the Feeling of Existence. 
“The feeling of existence (sextzment d’existence), 
which I shall call zuner feeling,* so as to separate 
from it the idea of a general condition ( généralité) 
which it does not possess, since it is not common to 
* The expression ‘‘ sext/ment intérieur”’ may be nearly equivalent 
to the ‘‘ organic sense” of modern psychologists, but more probably 
corresponds to our word consciousness. 
