Charles Frederick Wiesenthal meivtion.s him in a letter to his son, Andrew, then pursuing his medical studies in London. AfttT urging; him to seek to acquire skill in surgical operations, especially in lithot- omy and extraction of cataract, he says: "There is a young man returned lately, Mr. Tvler, who is settled in Frederick and
has successfully couched two or three persons, which has at once made him very conspicuous and he has made a con- siderable good match on the strength of it (June 5, 1787)." E. F. C.
Hist, of Western Maryland, ScarfF.
Toner's Ms. Biographies, Nat. Lib., Wash.,