BOOK II PART I
semblance are not so remarkable; but as that re-
lation makes a considerable ingredient in cau-
sation, of which all animals shew so evident a
judgment, we may conclude that the three re-
lations of resemblance, contiguity and causa-
tion operate in the same manner upon beasts
as upon human creatures.
There are also instances of the relation of im-
pressions, sufficient to convince us, that there is
an union of certain affections with each other in
the inferior species of creatures as well as in the
superior, and that their minds are frequently
conveyed through a series of connected emo-
tions. A dog, when elevated with joy, runs nat-
urally into love and kindness, whether of his
master or of the sex. In like manner, when full
of pain and sorrow, he becomes quarrelsome
and illnatured; and that passion; which at first