Philosophical transactions, Vol. L. Part I. For the year 1757Note 204 — L. A Letter to the Rev. Tho. Birch, D.D. Secret. R.S. from John Pringle, M.D. F.R.S. inclosing Two Papers communicated to him by Robert Whytt, M.D. F.R.S.Reading editionIbid. p. 176 and 177.◇Copy noteReturn to L. A Letter to the Rev. Tho. Birch, D.D. Secret. R.S. from John Pringle, M.D. F.R.S. inclosing Two Papers communicated to him by Robert Whytt, M.D. F.R.S.