1 69 ] 
XL An * Account of the Plague at Con- 
ftantinople: In a Letter from Mordach 
Mackenzie, M. D. to Sir James Porter, 
Bruflels, and F. R, S. 
S I R, 
Read Feb. 23, o many great men have written upon 
!7 6 4- the pi a g Ue already, as Profper Al- 
pinus, Sydenham, Hodges, Diemerbroeck, Mura- 
tori, Mead, &c. that it might be juftly thought 
prefumptuous in me to touch upon that fub- 
jedt after them. But as I find, that they differ in 
fome circumflances, and that fome of them have 
had an opportunity of feeing only one year’s plague; 
I may be allowed to write to you fuch remarks, as I 
have made for almoft thirty years, that I have lived 
in this plaguy country, without any quotations or 
confirmations from other authors ; which I hope will 
help to reconcile the different opinions of the above- 
mentioned famous authors. Which talk Iwouldchoofe 
rather, than to contradict them; for I am perfuaded; 
that each of them wrote according to the belt of his 
knowledge (as I do myfelf) without any intention of 
impofing in the lead upon mankind. 
It is beyond difpute, that the plague appears in a 
different manner in different countries; and that it 
appears differently in the fame country in different 
years : for we find moft other difeafes alter more or 
His 
Envoy Plenipotentiary at 
left 
