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In continuation of previous work1 ash analyses have been made of a number of foods and from the percentages of total sulphur, phosphorus and chlorine on the one hand, and of sodium, potasium, calcium and magnesium on the other, the excess of acid over base or of base over acid which will result from the oxidation of the food has been calculated. Previous ash analyses have also been studied and supplemented by such determinations as were necessary to permit the calculation of this balance for a wide range of food materials. Meats and eggs show a predominance of acid-forming elements ; in fruits and vegetables the base-forming elements predominate. From this standpoint the fruits and vegetables tend to balance the meats of the diet. Milk and the cereals contain acid-forming and base-forming elements in more nearly equivalent proportions.Through the kindness of Mr. L. H. Smith, samples of corn which had been bred through ten generations for high and low protein content respectively were obtained from the Illinois Agricultural Experiment Station. The ash-analyses of these were very similar except for the higher sulphur content of the high protein corn, which resulted in this sample showing a slight predominance of acid-forming elements, while in the low protein corn the baseforming elements predominated.In order to determine to what extent the excess of acid brought University and Belleoue Hos9ital Medical College. May 17, 1911.

No abstract

When the end point was approached as indicated by the change to a light brown color, 2 ml. of the starch solution were added from a buret, the sides of the beaker were washed down, and the titration was continued to a colorless solution. This part of the procedure was conducted in a fume cupboard because of the formation of hydrogen cyanide. No colored particles of the cadmium complex should be present in the bottom of the beaker.This procedure was used for 1 to 75 mg. of cadmium oxide.1 to 20 mg. required 0.0078 M potassium iodate 20 to 40 mg. required 0.0156 M potassium iodate 40 to 75 mg. required 0.0312 M potassium iodate