This compilation does not readily lend itself to drawing any more specific conclusions, but we cannot desist from expressing our opinion that in the clinical study of this recent epidemic we find very little that may not have been observed by clinicians in previous epidemics. THE URINE AND BLOOD IN EPIDEMIC INFLUENZA By PETER I. ZEEDICK, M. D. Epidemic influenza, unlike other acute infectious processes as diphtheria and scarlet fever, seemingly attacks the kidney in a rather mild manner. This statement refers only to the uncomplicated cases, as other bacterial or toxic agents do play a part in the nephritides occurring so often with the pneumonias or other complications following influenza. It is, however, true that in many simple epidemic cases there is evidence of a transient mild nephritis, or possibly, more correctly stated, a nephrosis. Some writers observed albuminuria in 80 per cent. of the cases, while the incidence in other reports varies from 4 to 66 per cent. It is not always stated with reference to these figures that the patients clinically were free from the common complication—pneumonia. The findings of various observers differ greatly, but they all agree that acute nephritis as a serious sequel is somewhat rare. In the literature of the past epidemics general acknowledgment has been accorded to the presence of albumin in the urine during the acute stage of the disease. Many times this has received no further notice or comment than “febrile albuminuria.” The association of occasional hyaline and granular casts has also been mentioned. One is impressed with the fact that the older observers laid but little emphasis on the urinary findings. It also seems to be true that nephritis as a clinical entity is not prone to follow the epidemics. In general, our conclusions from the last epidemic are about the same. The data for this paper was obtained from examination of 994 specimens of urine from 750 patients; of this number 517 specimens were examined at the Magee Hospital, where members of the S. A. T. C., all young men, were treated, and 447 specimens from the Mercy Hospital, where, in addition to the S. A. T. C., we had men, women and children. On account of the large amount of material and work on hand, as a rule only one specimen of urine was examined from each patient, but where complications were suspected repeated daily examinations were made. We have grouped our results in tables, so that the various points may be more readily followed.