APPENDIX III. 221 



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 dis- 

 tinctly. 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 concentration. 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 together 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 



