46 JOURNAL OF THE [January, 



human head, elicited interesting discussion, and is published in 

 this number of the Journal, p. 26. 



On motion, the thanks of the Society were tendered Dr. 

 Husted for this interesting Paper. 



The President informed the Society, that the specimen of 

 Gamboge, rubbed up in water, which he had prepared August 

 3d, 1874, which had until recently shown very active Brownian 

 movements, and which he had exhibited at the last Annual Re- 

 ception, seemed at last to have ceased its activity, a leak having 

 developed in the enclosing cell, and evaporation having ensued 

 as a consequence. He thought the subject would be of interest 

 to the Society, as fourteen years was probably the longest period 

 during which this phenomenon had been under observation. 



