Disinfecting Pcmers of increased Temperatures. 25 



anginosa. The symptoms, in the judgment of the attendant 

 physician, as well as in my own (taken in conjunction, too, 

 with the previous history ot' the case), left no doubt of its na- 

 ture. To make the most of this excellent example of the 

 malady, a succession of flannel waistcoats were worn, each 

 for several hours, in contact with the body of the patient, and 

 were then put into dry bottles, which were well corked, tied 

 over with bladder, and laid by for use. Other opportunities of 

 obtaining waistcoats, similarly infected, soon occurred, in the 

 cases of Sarah Geri'ard, a younger sister of the first patient ; 

 of William Johnston, aet. eleven ; and of Robert Green, seX. 

 fifteen. In Johnston, not only were the appearances quite un- 

 equivocal, but he was the last of four children, (not all of one 

 family,) who had been infected, in regular sequence, by com- 

 munication with each other. 



1. A waistcoat which had been worn all night by the elder 

 Gerrard, a day or two after the appearance of the scarlet 

 eruption, was heated four hours and a half at 204?° Fahrenheit, 

 and on the 8th of November was applied to the body of a boy, 

 aet. six years. No symptom having shown itself on the 15th, 

 a second waistcoat was then applied to him, which had been 

 worn more than twelve hours by Johnston on the second day 

 of the scailet efflorescence, and then heated at temperatures 

 varying from 200° to 204° Fahrenheit, during two hours and 

 three quarters. After an interval of twenty-two days the boy, 

 who still continued to wear the same waistcoat, remained per- 

 fectly well. 



2. A waistcoat, which had been worn twenty-two hours 

 by the elder Gerrard on the fourth and fifth days after the 

 appearance of the eruption, was on the 1 9th of November 

 heated three hours at 204'°. It was, after this, worn by a girl, 

 aged twelve years, till the 30th, without effect. Another waist- 

 coat, which had been worn by Sarah Gerraixl, was then sub- 

 stituted, but without any effect ensuing. 



3. A waistcoat, put on by Sarah Gerrard on the second 

 day of the efflorescence and woin by her three days, was ap- 

 plied, Nov. 19th, after it had been heated two hours at 200°, 

 to the body of a boy aged ten years. On the 30th a second 

 waistcoat, which had been worn by Robert Green during the 

 first and second days of the eruption, and which had been kept 

 in the disinfecting apparatus at 204° during one hour only, 

 was substituted ; but no symptoms of infection have appeared. 



4. A waistcoat, which had been worn by the elder Gerrard 

 seventeen hours on the 7th and 8th of November, (the second 

 and third days of the eruption,) was kept closely corked up in 

 a bottle till the 25th, then heated four hours and a half, at 



N.a. Vol. 11. No. Gl. Jan. 1832. E tempera- 



