«43RL£fe 
C O N T 
N T S 
O F 
VOL. LXXV. Part II. 
XVI. ^ F the Rotatory Motion of a Body of any Form what - 
„ ever, revolving, without Rejlraint , about any Axis 
fajjmg through its, center of Gravity. By Mr. JohnLanden, 
F.R.S. 
page 3 1 1 
XVII. Defcription of a new Marine Animal. In a Fetter from 
'Mr. Everard Home, Surgeon, to John Hunter, Efq . F.R.S . 
II ith a P oftfcript by Mr. Hunter, containing anatomical Re- 
marks upon the fame. P* 333 
XVIII, A Defcription of a new Syftem of Wires in the Focus of a 
Deleft ope, for obferving the comparative Right Afcenftons and 
Declinations of coeleftial Objects ; together with a Method of in- 
vefligating the fame when obferved by the Rhombus , though it 
happen not to be truly in an equatorial Pofition . By the Rev . 
Francis Wollafton, LL.B. F.R.S. p. 34.6 
XIX. An Account of a Stag's Head and Horns, found at Alport, 
in the Pariftj of Youlgreave, in the County of Derby. In a 
S. f 2 Letter 
