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It is surrounded by the hyaloid membrane, already noticed, and anteriorly is concave for the reception of the lens.

It is enveloped by a delicate capsule—the hyaloid membrane—which is connected in front with the suspensory ligament of the lens, and ends by joining the capsule behind the lens.

It is in contact with the surface of the retina at the back and with the attachments of the lens in front, being surrounded by a thin covering of its own, called the hyaloid membrane.

They are like two balls of fire, and there is a peculiar transparency of the hyaloid membrane, or injection of that of the retina.