By comparing the molecular rotation of some bridged derivatives of tartaric acid, (Remark: Graphics omitted.) obtained by condensing aliphatic aldehydes with ethyl d-tartrate, it has been found that the laevo-rotation of the compounds diminishes with increasing bulk (parachor) of R, that is, R affects the positive partial rotation. It has been shown that the molecular rotation of these compounds is greater than the isomer, (Remark: Graphics omitted.) obtained by the condensation of ketone with ethyl d-tartrate. This phenomenon is to be explained by the idea of vicinal effect of the radicals R1 and R2. It has been shown that the sequence of solvents arranged in order of the effect on the rotation of these compounds is Benzene>alcohol>cyclohexane. and that it is related with the refractive index together with the association of the liquid.
(1) Negative electrode of the alkaline storage cell can be prepared using bismuth oxide as an active material, in pasted form or in pocketed form. (2) The capacity of the electrode is improved greatly by mixing graphite powder to the active material, amounting the value 261 milliamperehour at highest per one gram of the oxide. (3) It is thought to be probable, therefore, that the electrochemical properties of the electrode prepared from bismuth oxide, seems to have close connection with electrically resistant nature of the oxide.