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The kidneys did not seem to be involved in the infection. Albumen was present in the urine, as might be expected in febrile conditions, but no evidence of acute clinical nephritis, such as suppression of urine, general œdema or uræmia, was recognized. The condition of the urine in this epidemic will be described more in detail in another paper of this series.

A peculiar pathological process in the muscles was brought to our attention by Dr. Klotz, who demonstrated a myositis or hyaline degeneration of the lower end of the recti abdominalis. This lesion is carefully described in the pathological section. After our attention had been called to this lesion we recognized several cases clinically having the same condition. One was in the right sterno-cleido-mastoid muscle and another was in the left ilio-psoas muscle. This last patient while he was convalescing developed a severe pain in the left hip, extending upward into the lumbar region and downward into the thigh. His decubitus was like that of one suffering with psoas abscess. Every test available was made to confirm this diagnosis, but all the findings were negative. The patient rested in the hospital, in bed, for some time, gradually improved, and eventually made a complete recovery.