3 1 4 DISEASES Sect. XXXIII. 2. o- 



who appeared afterwards to have been previoufly infe&ed with 

 the meafles, the progrefs of the fmall-pox was delayed till the 

 mealies had run their courfe, and that then the fmall-pox went 

 through its ufual periods. 



Two fimilar cafes fell under my care, # which I fhall here re- 

 late, as it confirms that of Mr. Hunter, and contributes to illuf- 

 trate this part of the theory of contagious difeafes. I have trans- 

 cribed the particulars from a letter of Mr. Lightwood, of Yoxal, 

 the furgeon who daily attended them, and at my requeft, after I 

 had feen them, kept a kind of journal of their cafes. 



Mifs H. and Mifs L. two filters, the one about four and the 

 other about three years old, were inoculated Feb. 7, 1791. On 

 the 10th there was arednefs on both arms difcernible by a glafs. 

 On the 1 ith their arms were fo much inflamed, as to leave no 

 doubt of the infection having taken place. On the 1 2th lefs 

 appearance of inflammation on their arms. In the evening Mifs 

 L. had an eruption, which refembJedthe meafles. On the 13 th 

 the eruption on Mifs L. was very full on the face and breaft, 

 like the meafles, with confiderable fever. It was now known, 

 that the meafles were in a farm houfe in the neighbourhood. 

 Mifs H.'s arm lefs inflamed than yefterday. On the 14th Mifs 

 L.'s fever great, and the eruption univerfal. The arm appears 

 to be healed. Mifs H.'s arm fome what redder. They were 

 now put into feparate rooms. On the 15th Mifs L.'s arms as 

 yefterday. Eruption continues. Mifs H.'s arms have varied 

 out little. 1 6th, the eruptions on Mifs L. are dying away, her 

 fever gone. Begins to have a little rednefs in one arm at the 

 place of inoculation. Mifs H.'s arms get redder, but fhe has no 

 appearance of complaint. 20th, Mifs L's arms have advanced 

 {lowly till this day, and now a few puftules appear. Mifs H.'s 

 arm has made little progrefs from the 16th to this day, and now 

 fhe has fome fever. 21ft, Mifs L. as yefterday. Mifs H. ha3 

 much inflammation, and an incveafe of the red circle on one arm 

 to the fize of half-a-crown, and had much fever at night, with 

 fetid breath. 22d, Mifs L.'s puftules continue advancing. Mifs 

 H.'s inflammation of her arm and red circle increafes. A few 

 red fpots appear in different parts with fome degree of fever this 

 morning. 23d, Mifs L. has a larger crop of puftules. Mifs. 

 H. has fmall puftules and great inflammation of her arms, with 

 but onepuftule likely to fuppurate. After this day they gradu- 

 ally got well, and the puftules difappeared. 



In one of thefe cafes the meafles went through their common 

 courfe with milder fymptoms than ufual, and in the other the 

 meafly contagion feemed juft fuffkient to flop the progrefs of 

 variolous contagion, but without itlelf throwing the conftitution 



into. 



