216 APPENDIX III. 



the same quantity is injected into the skin, in ten 

 minutes it can be detected in the lens and every- 

 where ; and even in four minutes the lithium may 

 be detected everywhere except in the lens. 



In half an hour after the same quantity is taken 

 into the stomach, lithium may be found in the 

 crystalline lens. 



After it has been taken eight hours, it may not have 

 passed completely into the inner part of the lens. 



In twenty-six hours it will be found in every part 

 of the lens. 



When half a grain only of chloride of lithium 

 was taken, in less than four hours traces were found 

 in the lens. And even when only a quarter of a 

 grain was taken, faint traces of lithium were found 

 in five and a half hours. 



2. On the Bate of Passage of Solutions of Lithium 

 out of the Textures of Animals. 



After two grains of chloride of lithium, in six 

 days neither a young nor an old guinea-pig gave 

 any lithium in the kidney, liver, or lenses. 



After two grains, in four days no lithium could 

 be found in the lens, nor in the cartilage of a joint. 



After one grain, in three days the alcoholic 

 extract of the lens showed no lithium. 



After a quarter of a grain of chloride of lithium, 

 in sixteen days the minutest traces of lithium were 

 detected in the liver, kidneys, and lens. 



After half a grain, for thirty-seven or thirty-eight 

 days traces of lithium could be found in the urine. 



