those
parts of the external objects that lie in, or neer, the _Axis_ of each
_Hemisphere_, are discernably painted or made on the _Retina_ of each
_Hemisphere_, and that therefore each of them can distinctly sensate or see
onely those parts which are very neer perpendicularly oppos'd to it, or lie
in or neer its optick _Axis_. Now, though there may be by each of these
eye-pearls, a representation to the Animal of a whole _Hemisphere_ in the
same manner as in a man's eye there is a picture or sensation in the
_Retina_ of all the objects lying almost in an _Hemisphere_; yet, as in a
man's eye also, there are but some very few points which liyng in, or neer,
the optick _Axis_ are distinctly discern'd: So there may be multitudes of
Pictures made of an Object in the several Pearls, and yet but one, or some
very few that are distinct; The representation of any object that is made
in any other Pearl, but that which is directly, or very neer directly,
oppos'd, being altogether confus'd and unable to produce a distinct vision.

So that we see, that though it has pleas'd the All-wise Creator, to indue
this creature with such multitudes of eyes, yet has he not indued it with
the faculty of seeing more then another creature; for whereas this cannot
move his head, at least can move it very little, without moving his whole
body, _biocular_ creatures can in an instant (or _the twinkling of an eye_,
which, being very quick, is vulgarly used in the same signification) move
their eyes so as to direct the optick _Axis_ to any point; nor is it
probable, that they are able to see attentively at one time more then one
Physical point; for though there be a distinct Image made in every eye, yet
'tis very likely, that the observing faculty is only imploy'd about some
one object for which they have most concern.

Now, as we accurately distinguish the site or position of an Object by the
motion of the Muscles of the eye requisite to put the optick Line in a
direct position, and confusedly by the position of the imperfect Picture of
the object at the bottom of the eye; so are these _crustaceous_ creatures
able to judge confusedly of the position of objects by the Picture or
impression made at the bottom of the opposite Pearl, and distinctly by the
removal of the attentive or observing faculty, from one Pearl to another,
but what this faculty is, as it requires another place, so a much deeper
speculation. Now, because it were impossible, even with t