On the SiMce-lattice of Liquid Crystals. 
51 
The second film was developed after an exposure of sixteen hours. It 
also showed no trace of interference phenomenon. Only an increase in 
the dispersion — which is probably not due to the solution — could be 
observed. 
In an experiment with Paraazoxyphenetol and a trace of olive oil no 
interference pattern w^as obtained after an exposure of twenty hours. On 
examining the solution microscopically the oil could be seen collected in 
small globules on the glass plates. On switching the magnetic field off 
the stripes reappeared between these globules. 
These experiments show that crystalline solutions of Paraazoxyanisol 
and Paraazoxyphenetol with olive oil have no space-lattice. 
In connection with this work I wish to express my sincere thanks to 
Professor Max von Laue, Institut international de physique Solvay, and 
to the Kgl. Preussischen Akademie der Wissenschaften for their aid in 
carrying out this work. 
