In the very same manner do they brush and cleanse their
bodies and wings, as I shall by and by shew; other creatures have other
contrivances for the cleansing and cleering their eyes.
_Sixthly_ that the number of the _Pearls_ or _Hemispheres_ in the clusters
of this Fly, was neer 14000. which I judged by numbering certain rows of
them several ways, and casting up the whole content, accounting each
cluster to contain about seven thousand Pearls, three thousand of which
were of a size, and consequently the rows not so thick, and the foure
thousand I accounted to be the number of the smaller Pearls next the feet
and _proboscis_. Other Animals I observ'd to have yet a greater number, as
the _Dragon-Fly_ or _Adderbolt_: And others to have a much less company, as
an _Ant_, &c. and several other small Flies and Insects.
_Seventhly_, that the order of these eies or _Hemispheres_ was altogether
curious and admirable, they being plac'd in all kind of Flies, and _aerial_
animals, in a most curious and regular ordination of triangular rows, in
which order they are rang'd the neerest together that possibly they can,
and consequently leave the least pits or trenches between them. But in
_Shrimps_, _Crawfishes_, _Lobsters_, and such kinds of _Crustaceous_ water
Animals, I have yet observ'd them rang'd in a quadrangular order, the rows
cutting each other at right angles, which as it admits of a less number of
Pearls in equal surfaces; so have those creatures a recompence made them,
by having their eyes a little movable in their heads, which the other
altogether want.
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