52 Weather and Diseases at Londonderry, 



strength; and, in young subjects, it is attended with 

 vomiting ; in some also with diarrhoea. The head-ache 

 is the most irksome and tedious symptom, and compels 

 the patient to keep his bed a day or two. In several 

 cases, a soreness occurs in the throat; in some, a cough 

 takes place at the beginning; in others, it does not ap- 

 pear, or, at least, in a slight degree, till the decline of 

 the febrile state. Children, on the diminution of the 

 pyrexia, take a running from the nose. The duration 

 of the complaint, until the appearance of convalescence, 

 is fiom tliree days to a week. 



Except in the cases of children, medical aid is rarely 

 sought; and, in these cases, the principal curative mea- 

 sures are the administi*ation of citrate of potash, acetate 

 of ammonia, calomel laxatives, and the antiphlogistic re- 

 gimen. In one case of an adult, belonging to the upper 

 class, where there was a haemorrhagic effort from the 

 fauces, it was found necessary to employ both venesec- 

 tion and vesicatories. I heard of another case, that of 

 a mechanic, who discharged some large spoonfuls of 

 blood from the throat, and who recovered without the 

 aid of medicine. 



Accept, &c. 



Wm. Patterson. 



Derry, April 11 th, 

 1806. 



