Book, Paragraph

 1   I,  2 |  others placed in a different class. The group Birds and the
 2   I,  3 |      for instance to form the class of Birds and the class of
 3   I,  3 |    the class of Birds and the class of Fishes, each of which
 4   I,  4 |     aggregated under a single class; groups whose attributes
 5   I,  4 |        that is, not the whole class Birds collectively, but
 6   I,  4 |      species belonging to the class.~On the other hand, however,
 7   I,  4 |       to form each a separate class. For within the limits of
 8   I,  4 |       the limits of each such class, the parts do not differ
 9   I,  5 |      to assemblages, like the class of Birds, of closely allied
10  II,  2 |       that may be made in the class of homogeneous parts. For
11  II,  9 |     severally belong. In this class too must be reckoned the
12  II,  17| whethe+r we compare them as a class with such as live on land,
13 III,  6 |      the animals of a certain class, because they live on land.
14 III,  6 |     to the whole of a certain class. Yet the possession of a
15 III,  7 |       it is doubtful in which class they should be reckoned.