抄録
1. The writer proposed the method for determination of guanine which consists of precipitation of purine with ammoniacal silver nitrate and titrätion with hypoiodite according to Willstätter and Schudel.
2. From the analytical values of nitrogen, phosphorus, amino-nitrogen (Van Slyke's method), purine-nitrogen (copper bisulfite method) and guanine, the writer suggests that the individual bases (adenine, guanine, cytosine and uracil) in yeast nucleic acid (Merck) occur in nearly equal molar ratios.
The present work was aided by a grant from the Scientific Research Fund of the Department of Education.
