1865.] into and out of the Vascular and Non-vascular Textures. 423 



it was killed. No caesium could be found in the lenses, nerves, aqueous 

 humour, blood, or bile. Urine, kidney, and liver showed caesium slightly 

 in the aqueous extract of the ash. 



A guinea-pig was given ten grains of chloride of csesium, and twenty 

 hours afterwards ten grains more. Twenty-seven hours after the second 

 dose it was killed. 



The evaporated and incinerated extract of the two lenses showed the 

 caesium only faintly. The aqueous humour of the eye showed caesium 

 faintly. The evaporated and incinerated extract of the two large nerves 

 of the legs showed caesium pretty distinctly. 



On the Passage of Sulphate of Thallium into the Textures. 



A rabbit was given one grain of sulphate of thallium. The urine, passed 

 two hours after the first dose, gave the reaction very clearly. 



Another rabbit was given three grains of sulphate of thallium, and it 

 was killed twenty-one hours and a half afterwards. This rabbit took no 

 food after the dose of thallium, but the stomach was found completely 

 full of dry food. Thallium was found in the kidneys, liver, and spleen,: 

 by simply touching with a red-hot wire and bringing the small quantity 

 of substance adhering to the wire into the flame. The blood, lens, and 

 cartilage showed none in this manner. The aqueous extract, however, of 

 the coagulated blood and lens showed thallium distinctly. The cartilage 

 of the hip could not be thus examined, owing to the small quantity to 

 be got. 



Another rabbit was given three grains of sulphate of thallium, and it 

 was killed in six hours and a half. The aqueous extract of the lens 

 showed thallium distinctly. 



A guinea-pig was given two grains of sulphate of thallium, and twenty 

 hours afterwards it took two grains more ; twenty-two hours after the 

 second dose it was killed. The urine showed thallium only after con- 

 centration. Small pieces of the liver, kidney, cartilage of the short ribs, 

 and large nerve of the leg showed thallium distinctly. Humours of 

 the eye showed thallium distinctly. Aqueous extract of the lenses to- 

 gether showed it distinctly. The blood showed no thallium directly, but 

 the aqueous extract of a small quantity of coagulated blood showed 

 the thallium very faintly. The brain showed the thallium also very faintly. 

 The toe-nails showed the thallium very distinctly ; and the hair of the 

 belly also showed it very distinctly. 



Another guinea-pig was given two grains of sulphate of thallium, and 

 it was killed in six hours. The aqueous extract of the lens showed 

 thallium faintly. The urine showed the thallium distinctly. The aqueous 

 extract of the two large nerves showed no thallium. 



On the Passage of Sulphate of Silver into the Textures. 

 A guinea-pig was given one-eighth of a grain of sulphate of silver. 

 Twenty-three hours afterwards it was given another eighth of a grain. 



