STUDY OF THE abnormal constituents of urine with reference to toxemias and the anesthetic risk has been pursued by many able investigators all over the civilized world. It is hardly possible for me to add much of value to the store of knowledge already accumulated so far as urinary pathology is concerned. My desire has been, on the other hand, to investigate the role of the physiological constituents in so far as their relation to one another may he affected by toxemias.