412 Dr. B. Jones on the Passage of Crystalloids [1865. 



Sixth day. Urine shows no lithium. Ash of the urine shows faint traces 

 of lithium. 



Seventh day. Ash of urine shows no lithium. Alcoholic extract shows 

 traces. 



Eighth day. Alcoholic extract from one ounce of urine still shows traces 

 of lithium. 



Ninth day. Alcoholic extract from one ounce of urine shows no lithium. 



Experiment 5. A boy, aged sixteen years, took five grains of chloride 

 of lithium, and the urine was passed every second minute. Half an hour 

 previously he had eaten some bread and butter. No lithium could be de- 

 tected in the urine previous to the taking of the dose. 



Second minute, no lithium in the urine. 



Fifth minute, none. 



Ninth minute, none. 



Tenth minute, very faint traces of lithium. 



Thirteenth minute, lithium very distinctly present. 



After twenty-four hours lithium still very distinct. 



Second, third, fourth, and fifth day. Still very distinct. 



Seventh day. No lithium was found in the evaporated residue. The ash 

 of the residue shows very slight traces. 



Eighth day. The alcoholic extract from one ounce of urine shows no 

 lithium. 



Experiment 6. The same boy had his hair, nails, and urine examined, 

 and no lithium was found. 



Five grains of carbonate of lithia was then given to him. 



In two minutes, five minutes, ten minutes, no lithium was found in the 

 urine. 



In twenty minutes lithium was distinctly present. 



In eighteen hours the lithium was found in the nails, none in the hair of 

 the head. 



In thirty-two hours, still none in the hair of the head. Very distinctly in 

 the root and tip of the nails. 



Another five grains of carbonate of lithia was then given. 



In nineteen hours lithium was detected in the hair of the head. 



In four days a drop of the urine showed lithium very distinctly, as did 

 the hair and nails. 



In five days the same. 



In seven days one drop of the urine shows no lithium, but if the urine - 

 is slightly concentrated by evaporation, lithium is still perceptible. 



In eight days one-eighth of an ounce evaporated still shows slight 

 traces. 



In nine days no lithium in one-eighth of an ounce of urine. 



Experiment 7. The same boy took five grains of carbonate of lithia, 

 but he omitted previously to empty his bladder. 



In five minute?, lithium not yet detectable in the urine. 



