( 
) 
Fig. 3. 
11. We conclude with a summary of the cases possible for a 
floating cube in so far as e > j. 
1 > * > 0.788 .. . first case in vertical position. 
0.738... > t >0.75 „ „ „ oblique 
0.833 ...>«> 0.77 ... fourth case, level plane a pentagon. 
0.833 .. > e > 0.5 fifth „ „ „ „ hexagon, 
where an interior diagonal is normal to the 
level of the liquid. 
Moreover there are still possible positions belonging to the fifth 
case, where the interior diagonal is not perpendicular to the level 
of the liquid. The treatment of this is however attended with great 
difficulties. 
Chemistry. — “*O n partial racemism By Mr. H. Dutilh. (Com¬ 
municated by Prof. P. van Romburgh). 
(Communicated in the meeting of October 30, 1909). 
A recent article from Findlay and Hickmans *) induces me to 
communicate the results of a research on the above subject, on which 
fbave been engaged since August 1908, the publication of which has 
delayed, however, through circumstances not under my control. 
I have been occupied with the case of partial racemism which 
occurs in strychnine racemate and I have studied more in parti¬ 
cular the behaviour of - this substance in presence of its aqueous 
solution. Although this salt has already been subjected to an extensive 
1} Journ - dhem. Soc. Trans. 95. 1386 (1909). 
Proceedings Royal Acad. Amsterdam. Vol. XII. 
27 
