The chemical composition of the “Di-saké” compared with that of the ordinal “saké” is summarized as follows:
(1) In the above experimental results the nitrogenous compounds isolated from 10 litres of “di-saké”, are hypoxanthine-hydrochloride (0.20 g.), arginine nitrate (4.60 g.), cholinechloroaurate (6.75 g.), and ammonia (3.52 g.), while the isolated bases from 25 litres of “saké” by Dr. K. Kurono, are cholinepicrate (3.8 g.), histaminepicrate (0.15 g.), lysinepicrate (0.52 g.) and ammonia (1.3 g.). It is the most great difference that the “di-saké” contains large amount of arginine, which could not be isolated from the “saké”.
(2) As regards the general composition, 1 fined great difference between the “di-saké” and the “saké”: in the former, the quantity of reducing sugar (chiefly glucose) and other extractive substances are considerably much more than those of the latter.
(3) In the “di-saké”, the amount of non-protein substances is much more than those of the “saké”.
(4) The reaction of “di-saké” is almost neutral, but in the “saké” remarkably acidic.

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The results of the investigation on the electrolytic reduction potential of p-aminoazobenzene with the polarograph and dropping mercury cathode at 25°C were as follows.
(1) Reduction potential of p-aminoazobenzene was more positive in lower concentration than that in higher concentration in every PH solution.
(2) Owing to the weak basic property of p-aminoazobenzene, there were two reduction potentials which were due to the dissociated and undissociated forms in some proper acidic solutions. In high acidic solution, p-aminoazobenzene changed to quinoid form which was demonstrated by spectrographic study. The reduction potential of quinoid form was more positive than that of azoid form and further, that of dissociated form more posi tive than that of undissociated form.
(3) The reduction potential of p-aminoazobenzene which substituted NH₂ group in azobenzene was more negative than that of the latter. This is expected from our negativity rule of electrolytic reduction.
(4) The solubility of p-aminoazobenzene in water at 25°C was found to be 2.815•10^-4g. mol per litre calculated by the result of polarographic measurement.

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The results of the investigation on the electrolytic reduction potential of dimethylaminoazobenzene with the polarograph and dropping cathode were as follows:
(1) The reduction potential of dimethylaminoazobenzene was more negative in high concentration than that of in low concentration, except in the case of solution which Pa was lower than 2.2.
(2) In acidic solution, the reduction of dimethylaminoazobenzene showed the reduction potentials of quinoid, dissociated and undissociated forms of azoid form as same as in the case of p-aminoazobenzene.
(3) The maximum currents of the polarograms of dimethylaminoazobenzene in acidic solutions were increased with elevation of concentration of ethanol. From these facts, we assume that dimethylaminoazobenzene becomes easily adsorbable on the mercury cathode in acidic solutions.
(4) The•mutual relation among the reduction potentials of azobenzene, p-aminoazobenzene and dimethylaminoazobenzene was found to follow our negativity rule of electrolytic reduction, that is, reduction potential of azobenzene was most positive and that of dimethylaminoazobenzene most negative among them.

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1. It is confirmed that both linoleic acid and linolenic acid are equally effective in curing a specific deficiency disease produced by rigidly fat-free diets.
2. Oleic acid and elaidic acid induce growth response of rats, but seem to be ineffective in curing sick rats.
3. The rats receiving clupanodonic acid suddenly lose body weight and are not cured with either linoleic acid or linolenic acid.
4. The poor results obtained with stearic acid may be attributed to im-perfect absorption.
5. Vitamin B and G are definitely ruled out as a limiting factor in this dietary deficiency.
The author wishes to express her deep gratitude to Professor U. Suzuki for his many helpful suggestions throughout this work and to Dr. W. Nakahara for his invaluable advice on the anatomical examination. She is also indebted to the Keimei Society for financial assistance.

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(1) Sterilising action of mineral acids such as HNO₃, HCl, H₃PO₄ is determined by P_H of each solution, and has no relation about kind of acids.
(2) Anions of strong mineral acids have no sterilising action.
(3) There is no special relation between the value of molecular weight of mineral acids and sterilising action.
(4) On sterilising action of cromic acid and HCNO, PH concerns a little.
(5) Sterilising action of dilute cromic acid and HCNO, such as N/100 are almost due to the action of undissociated acid molecule.
(6) The violent sterilising action of Osmic acid is chiefly due to the action of its anion and P_H concerns a little.
(7) Sterilising action of Boric acid is chiefly due to PH and the strilising action of it is very feeble.

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