APPENDIX III. 199 



Sixth day. No lithium could be detected in eva- 

 porated urine. 



Experiment 3. The same man took ten grains of 

 carbonate of lithia after fasting for seven hours. 

 The urine was passed every second minute after 

 taking the lithia. 



Second, fourth, and sixth minute, no lithium. 



Eighth minute, traces of lithium very slight. 



Tenth minute, lithium distinctly present. 



Third day afterwards lithium very distinct. 



Fourth day. Lithium faintly found in each drop 

 of urine. 



Fifth day. Lithium very faint in each drop. 



Sixth day. Only the merest trace. 



Seventh day. No lithium in the eighth of an 

 ounce evaporated to a few drops. 



Eighteenth day. Two ounces of urine incinerated, 

 and the ash heated with sulphuric acid and alcohol, 

 showed no lithium. 



Twenty-first day. Nails of the hands and feet 

 still show lithium. 



Experiment 4. The same man, two hours and a 

 half after a little food, took ten grains of chloride of 

 lithium : one nail on the hand and one on the foot 

 were varnished before taking the lithium. 



Second and fourth minute afterwards no lithium 

 was in the urine. 



Sixth minute, traces of lithium. 



Eighth minute, distinctly present. 



Tenth minute, very distinctly. 



Twenty-five hours afterwards none of the nails 

 showed any lithium. 



