[ x 75 ] 
XIX. An Account of the remarkable Altera- 
tion of Colour in a Negro W oman : In a 
Letter to the Reverend Mr . Alexander 
William Ton of Maryland, from Mr, 
James Bate, Surgeon in that Province, 
Communicated by Alexander Rufiel, M. D . 
F. R . S, 
To the Rev. Tho. Birch, D. D. Secret. R, S . 
S I R, 
Read, io May, 
1 759 ■ 
S OME account of the extraordinary- 
fads mentioned in the inclofed let- 
ter having been communicated to me, above a year 
ago, by the Reverend and ingenious Mr. William- 
fon of Maryland, I thought them worthy of atten- 
tion j and therefore begged, that he would be fo kind, 
as to get fome Gentlemen of the faculty to affift 
him in making a further enquiry. He has accord- 
ingly tranfmitted to me the cafe, now fent you, as 
related by Mr. Bate, a practitioner in phyfic, of fome 
note in that part of the world. 
I have alfo had the particulars fince confirmed to 
me by two Gentlemen now in England, who have 
often feen the woman ; fo (hall make no farther apo- 
logy for giving you this trouble, in order to its be- 
ing communicated to the Royal Society. 
I am, Sir, 
Your moft obedient humble Servant, 
Limpet, May sxh. Alexander Ruffell. 
S I R, 
