. Numb. 454. 
PHILOSOPHICAL 
TRANSACTIONS. 
Por the Months oiJuljj Augufi^ Sept embers 
and October-, i73 9- 
The C O N T E N T S. 
I. A Letter from the Re^j. Mr. John Clayton (afterwards 
Dean of Kildare in Ireland) to Dr. Grew, in Anfwer 
to federal Queries relating to V irginia, fent to him by that 
learned Gentleman.^ A. D. 1687. communicated by the Right 
Reverend .Father in God Robert Lord Bifcop ^'Corke, to 
John (^'Egmont, F. R. S. , 
IT. An Experiment to prove., that nttt., when agitated by 
Fire, is infnitely more elaftic than Air in the fame Circim- 
Jiances'., by the late Rev. John Clayton, Dean 0/’ Kildare 
in Ireland. Communicated by the fame Hand as the pre- 
ceding. 
,III. Part of a Letter from ']o\'in 'GrtQr\, M. D. Secretary of 
the Gentlemens Society at Spalding in Lincolnlhire, to 
C Mortimer, M> D. Sec, R. S- ftrving to inclofe a Rela- 
tion of a Girl three Tears old, who remained a ^larter of 
an Hour under Water without Drowning. 
IV. The Cafe of Mr. T. Coy., Surgeon at Peterborough, who 
fell into d PeffilentiaT Fever, upon Tapping a Corphe 
lately dead of an Hydropfy, drawn tip by himfelf, and read 
before th^ Peterborough Society, Sept. i. 1^16. comnui- 
tii coated to the Royal Society by the Rev. Mr. Tim. 
Neve, 'Secretary to the Peterborough Society. 
V. The Variation of the Magnetic Needle, 'as obferved in 
Three 'Voyages from London ro , Maryland, by Walter 
H6xton,Gri^r. 
VI. Some Thoughts and Conje£lures concerning the Caufe 
of Elafticity, by J. T. Defaguliers, LL. D. F. R. S. 
