94 



DR. LOUIS ELSBERG, 



fig. 3. The branching light fields were the smaller the nearer 



fTZ't. 



F'S- 4. 



Fig. 2. — Cells from the flower of No- 

 rimbergia, stained with nitrate of 

 silver. 



Fig. 3. — Hair of flower of Norim- 

 bergia, stained with nitrate of 

 silver. 



the compartment was to the apex of the hair ; at the end, the 

 whole hair, as a rule, appeared uniformly dark brown, or con- 

 tained in its interior an extremely delicate, light-coloured 

 reticulum only. 



After a one half per cent, solution of gold chloride had been 

 brought to bear upon pieces of the flower for about forty 

 minutes, the wall of cellulose became more distinct although 

 not coloured by the gold salt. In the interior of the polygonal 

 fields, on the inner surface, a scalloped body had made its 

 appearance; it was slightly retracted from the cellulose frame 

 and offshoots, bordered by a continuous delicate layer, and 

 filled with a very distinct reticulum in connection with a 

 central coarsely granular and also reticulated nucleus. The 

 bordering layer and the reticulum around the nucleus, as well 

 as the nuclear wall and the intranuclear granules and reti- 

 culum, were of a dark violet colour, just as in animal epithelia 



