The CONTENT S. 
V. Tart of a Letter from his Grace the Duke of 
Richmond, Lennox and Aubigne, F.R.S. to M. 
Folkes, Efq } Tr . R. S. 510. 
VI. Of the Structure and Difeafes of Articulating 
Cartilages, William Hunter, Surgeon. 514. 
VII. Tart of a Letter from the Rev d Mr. Thomas 
Lord, to William Follces, Efq ; F.R.S. concerning 
forne Worms whofe Tarts live after they have 
been cut af under. 522. 
VIII. A Letter from^.VMonSyM.D. F.R.S. ^Mar- 
tin Folkes, Efq\ Prefident of the Royal Society, 
containing the Natural Hiftory of the Rhinoceros. 
523. 
IX. Ail Account of a Compart fon lately made by fome 
Gentlemen of the Royal Society, of the Standard 
ofaYatd, and the feveralNJ eights lately made for 
their Ufe > with the Original Standards of Meafurcs 
and Weights in the Exchequer, and fome others 
kept for public Ufe, at Guild-hall, Founders hall, 
the To\Ver, &c. 541. 
X. The Defcription of an Inftrument for reducing a 
diflocated Shoulder ; invented by Mr. ]ohn Freke, 
Surgeon of St. Bartholomew’^ Hofpitai, and F. R. S. 
5 5 6. 
XI. A Letter from Peirce Dod, M. T). Fellow of the 
Royal College of Phyficians, London, and Thy - 
fician to St. Bartholomew V Hofpitai, to the Prefi- 
dent of the Royal Society, concerning a Terfon 
who made bloody Urine in the Small- Pox, and re- 
covered. 5 59 - 
I. Ob- 
