At six weeks it weighed 2 pounds 2 ounces, and at ten months, 12 pounds, but was still very weak and ill-nourished.

Evans has an instance of a fetus expelled enveloped in its membranes entire and unruptured.

The membranes were opaque and preternaturally thickened, and were opened with a pair of scissors; strenuous efforts were made to save the child, but to no purpose.

The mother, after a short convalescence, made a good recovery.

Forman reports an instance of unruptured membranes at birth, the delivery following a single pain, in a woman of twenty-two, pregnant for a second time.