C. M. Wetherill—Experiments with Ammonium Amalgam. 163 
um amalgam formed cannot swell, but expands laterally, assum- 
ing areticular appearance by reason of the many gas bubbles 
which in fact thus become perceptible. 
of ammonium amalgam, already in the swollen 
condition, be pressed between two plates of glass, it is spread 
out into a thin perforated film resembling lace. 
_ dx. 8°. If a piece of spongy ei be heated and stirred 
into smelted sodium amalgam, the latter fills the pores of the 
have required several minutes if the reaction had taken 
n the cold. 
sodium. 
. 
reddened litmus r be saturated with soluti 
ont producing ‘an alkaline reaction upon the paper n¢ 
