TOXICOLOGY. 349 



bullse, these being produced by effusion of blood beneath 

 the lining membrane. 



In one of the cases there were two almost complete 

 perforations through the walls. 



The small intestines contained much dirty grey mucous, 

 and presented patches of acute inflammation. The large 

 intestines also showed signs of inflammation, the mucous 

 membrane being reddened in patches. The peritoneum 

 showed spots of ecchymosis in various places. 



The brain was not examined. 



Though the waggoner denied having administered arsenic, 

 it was afterwards elicited that he had given to each of the 

 horses a quantity of arsenious acid, made into balls by mix- 

 ing it with tar. 



It was calculated that each horse received about 5iv. to 

 5i., but it was not possible to ascertain the exact amount. 



This he had given at about 8 or 9 p.m. on the previous 

 day, April 11th. 



The symptoms here recorded, and the pathological lesions 

 found, are characteristic of acute arsenical poisoning; and 

 arsenic in abundance was found in the contents of the 

 stomachs. But the eff'ects of arsenic vary much with the 

 amount given, and with the method of administration. 



About 11 p.m., on June 20th last year, we were sum- 

 moned to a team of four cart-horses belonging to a farmer 

 who lived a few miles from Louth. The symptoms in these 

 cases were much less severe than those above described. 



The pulses were 90, 72, 60, and 62 respectively, weak 

 and fluttering. The submaxillary artery was contracted, 

 and felt like a mere thread. The respirations were also 

 increased, the legs and ears cold, and there was total 

 anorexia. 



One of the animals, an old cart-mare, became violently 

 purged about 12 p.m., and the liquid faeces were blood- 



