Prognosis and Treatment of Epilepsy

supernatant fluid. 2. All the tuLbes showed a rapid fall in pH during the first two hours. This was attributed to the setting up of an equilibrium between the CO2 in the air of the tube and the supernatant fluid. In comparison with the control tubes, which never fell below the initial drop to 7.3 or 7.25 during the first two hlours, all the tubes showed an inicrease in the productionl of acid during ninety-six hours incubation, thc pH falling most rapidly during the first forty-eight hours. C-rocker No. 10 sho-wed the greatest proportion of acid, the niormal fibroblasts the least, and the other tumours showed a gradual decrease in the production of acid in the following order :-Crocker 1348, Wk'alker 315, :338, and( :319, as indicated bv the colour changes. I am in(lebted to Dr. WVarren H. Lewis for making this work possible, for his advice atnd criticism, an(d for his generous supply of tumour material.