ON MATTER AND FORCE. 



87 



they possess, then it follows that our present 

 ideas of the local action of medicines are far 

 too restricted. 



The experiments which I have published in 

 the Proceedings of the Royal Society, June 15th, 

 1865,* on the rate of passage of lithium into 

 and out of the vascular and non-vascular tex- 

 tures, show the rate at which chloride of lithium 

 passes into the textures through the stomach 

 of the guinea-pig : 



lg grain in 3 days 



3 grains in 15 minutes 



> ., 30 

 30 

 30 

 60 

 60 



I 



. 4 



8 



24 

 26 



5* 



ho rs 



plenty found everywhere. 



everywhere except in the lens. 

 > > 



traces in the lens. 



outer part of the lens. 



> 



except in the lens. 



and throughout the lens. 



except in the lens. 



Hence, in four minutes, in a guinea-pig, 

 after three grains of chloride of lithium it may 

 be found everywhere by the spectrum-analysis ; 

 .and this quantity was found to give traces in 

 the lens of the eye after thirty-three days; 

 and it appeared in the urine for thirty more 

 * See Appendix III. 



