Книга только для ознакомления
.
But as regards the larger groups-such as Birds-which comprehend many
species, there may be a question. For on the one hand it may be
urged that as the ultimate species represent the real existences, it
will be well, if practicable, to examine these ultimate species
separately, just as we examine the species Man separately; to examine,
that is, not the whole class Birds collectively, but the Ostrich,
the Crane, and the other indivisible groups or species belonging to
the class.
On the other hand, however, this course would involve repeated
mention of the same attribute, as the same attribute is common to many
species, and so far would be somewhat irrational and tedious. Perhaps,
then, it will be best to treat generically the universal attributes of
the groups that have a common nature and contain closely allied
subordinate forms, whether they are groups recognized by a true
instinct of mankind, such as Birds and Fishes, or groups not popularly
known by a common appellation, but withal composed of closely allied
subordinate groups; and only to deal individually with the
attributes of a single species, when such species, man, for
instance, and any other such, if such there be-stands apart from
others, and does not constitute with them a larger natural group.
It is generally similarity in the shape of particular organs, or
of the whole body, that has determined the formation of the larger
groups
|
