This is no fanciful simile: it is simply true that such is the actual
appearance of the yolk at this time; and the idea cannot but suggest
itself to the mind, that the thoughts which have been at work in the
universe are collected and repeated here within this little egg, which
offers us a miniature diagram of the firmament. This is one of the first
changes of the yolk, ending by forming regular clusters with a sort
of net-work of albumen between, and then this phase of the growth is
complete.
Now the clusters of the yolk separate, and next the albumen in its turn
concentrates into clusters, and the dark bodies, which have been till
now the striking points, give way to the lighter spheres of albumen
between which the clusters are scattered. Presently the whole becomes
redissolved: these stages of the growth being completed, this little
system of worlds is melted, as it were: but while it undergoes this
process, the albuminous spheres, after being dissolved, arrange
themselves in concentric rings, alternating with rings of granules,
around the Purkinjean vesicle.
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