抄録
1. The inhibit pry action on malt aivtilase of nitrate, chloride, aucl bromide of silver, gold chloride (as sodium chloraurate ), copper sulphate and lead acet:tte leas been studied.
2. It has been shown that the inhibitv nrv action is the same function of the concentration of the netal in all the cases studiei,
3. The strength of inhibitory action of the salt- of silver, gild. copper and lead st:ivds in the ratio of 1:1/8:1/30:1/1400
4. On the a ssu ni p Lion that the inhibitory action is due tip the formation of a colftipound between the, n::etad and the enzy ine an equation is obt tined, which represents the relation between the concentrations of the enzyme and silver nitraAe on one hind and the strength of the iulhilhitory action on the other with bieralile approximation.
5. It has been attempted to evalnate the dissociatiou constant of the core pound Ibrined. by the enzyme and silver ion, also to evaluate the concentration of the enzyme in the ordinary unit.
6. The solubility of silver chloride and bromide in water has J been estimated from the iu1iibit, iry actions of their solution and was found in rough agreement with the established data.
In conclusion I tender any l warty thanks to Prof. K. Ikeda under whose guidance the foregoing work has been done.
