Book,  Paragraph

 1  IV,  5 |     are several species of the urchin, and one of these is that
 2  IV,  5 | divided up by them. The edible urchin moves with greatest freedom
 3  IV,  5 |         Singularly enough, the urchin has what we may call its
 4  IV,  5 |     the back of the shell. The urchin has, also, five hollow teeth
 5  IV,  5 |     the mouth-apparatus of the urchin is continuous from one end
 6  IV,  5 |    panes of horn left out. The urchin uses its spines as feet;
 7  IV,  6 |      general some resemble the urchin in this matter of excretion,
 8  IV,  8 |        or creeping species the urchin appears to have the least
 9   v,  12|        exception of the edible urchin; for this animal has the
10   v,  12|    Pyrrhaean Straits, for this urchin is at its best for table