( 621 ) 
cularly saccharose enormously diminish the saponification velocity. Now, 
these are just the substances which form salts with Na OH according 
to the scheme: 
Cre Ho On + Na OH = Cie Ho, On Na -f- H,0. 
KULLGREN attributes the influence exercised by glycerol and saccharose 
to a chemical change in the above sense, showing plainly the acidic 
nature of cane-sugar. 
Tf, on the strength of this view, the influence exercised by the 
addition of saccharose on the electrical conductive power of N./49 NaOH 
solutions is calculated, a satisfactory agreement appears to exist 
between the calculation and the experiment as shown by the 
following table taken from KULLGREN. 
TABLE II. 
Relative 
Percentage by volume = Conductivity (at 20°.7 C.) 
Fn 
saccharose. found. calculated. 
0 4.04 — 
0.533 3.06 3.32 
1.058 2.79 2.36 
2.11 2.12 2.33 
4.20 1.63 1.78 
7.00 1.26 1.31 
15.87 0.78 0.73 
3. I have now studied the influence which cane-sugar invert-sugar, 
d-glucose, d-fructose and finally mannitol exercise on the saponifi- 
eation-velocity of N./40 ethylacetate by N./y NaOH. 25° was chosen 
as the temperature of the experiments. 
Mannitol was also investigated in order to show once more that 
substances which do not yield salts exercise an influence of a quite 
different kind than those who do form such compounds. 
The different solutions were mixed together in the well-known 
manner in 100 cc. flasks made of Jena-glass which were previously 
steamed. In every case the concentration of the ethyl acetate and 
of the lye was N./40. 
The flasks were suspended in a thermostat the temperature of 
which was constant within 0,03° (toluene-regulator and powerful 
stirring by means of HeINRICI hot air-motor). From time to time 
