(1) Under some assumptions, the distributions of potential and electric charge in capillary are given by the equations (15)–(22) … (Section 2.) (2) The quantity of liquid flowed out electro-osmotically W′ is given by the equation (40), and W′/πR2 is expressed by the function of radius R. The relation between permeability of membrane and electro-osmotic transfer has already been pointed out(1) to be different from that given by the Helmholtz’s equation in which W′/πR2 is constant for any R, although it is only considered to be caused from the “free-osmosis”—that is, equivalent to the first term in right hand member of equation (39)… (Section 3.) (3) The current in capillary differs from that in the large vessel, because of its non-uniform distribution of electric charge. This is given by the equation (50). And, the relation between so-called surface conduction and ζ-potential seems to be slight, as D.R. Briggs(1) has stated. (Section 4.) The writer wishes to express his hearty thanks to Prof. Setoh for his kind advice.
Iso-butyl mercaptals of three hexoses, one methyl pentose, one pentose and two dioses are crystallized out as new compounds. Other sugars, e. g. lactose, fructose, xylose are tried but ended in negative results.
(1) General method of reduction of compounds in liquid ammonia by alkali metals and apparatus were described. (2) Trimethyl stannyl iodide from methyl iodide and sodium-tin alloy and from which trimethyl stannyl hydroxide was prepared. (3) Trimethyl stannyl free radical was prepared by the reduction of trimethyl stannyl hydroxide with metallic sodium in liquid ammonia solution.