662 Proceedings of the Poyal Society of Edinburgh. [Sess. 
Anthranilic Hydrochloride : — 
Concentration. 
Depression. 
Hydrolysis. 
h 
K* 
*0412 N. 
•1615° 
•226 
367 
*0426 
•1630 
•177 
617 
•04636 
•1800 
•207 
399 
•0537 
•2035 
•158 
628 
•05453 
•2055 
•152 
673 
•05586 
•2140 
•186 
421 
•0596 
•2240 
•146 
672 
•0598 
•2250 
•148 
650 
The convergence temperature method of Nernst and Abegg* was also 
used for some freezing-point determinations. The apparatus consisted of a 
Jena glass beaker stirred mechanically by a circular silver disc just fitting 
into it, with a central hole for the thermometer. The beaker was supported 
inside a brass cylinder fitted with a lid, and this, again, was surrounded by 
a freezing mixture of ice and salt solution. 
The convergence temperature of the apparatus was found, and the 
outside bath kept at the required distance below zero. 200 c.c. of water 
were overcooled in the beaker 2-2*5° C. It was then put in position and 
the lids closed. When the temperature (observed through a reading tele- 
scope) had become steady, the stirring was commenced, and this froze out the 
ice while the temperature rose to zero. The freezing-point was noted, and 
enough of a cooled concentrated solution added to make the whole quantity 
about twentieth-normal, when the new freezing-point could be observed. 
Hydrochloric Acid : — 
Concentration. 
Depression. 
Depression 
for '05 N. 
•04818 N. 
•171° 
•1775° 
•04822 
•172 
•1783 
•04827 
•171 
1771 
•04827 
•173 
•1792 
Mean 
o 
o 
00 
l 
* Zeit. Physikal. Ghem ., vol. xv. p. 681. 
