CO N T E N T S. 
■•was cut away. By James Bent, Surgeon, at 
Newcaftle. Communicated by Dr. Hunter. 
xr „ . . P- 553 
XXXIX. Continuation of an experimental Inquiry 
concerning the Nature of the mineral elaflic Spirit , 
or Air , contained in the Pouhon Water , and other 
Acidulce. By W. Brown rigg, M. D. F. R. S. 
Addrejfed to Sir John Pringle, Bart. P. R. S. 
P- 357 
XL. Particulars of the Country of Labradore, ex- 
tracted from the Papers of Lieutenant Roger 
Curtis, of His Majeftys Sloop the Otter, with a 
Plane-Chart of the Coajl. Communicated by the 
Honourable Daines Barrington. p. 372 
XLL An Account of fame new Experiments in Flee - 
Jr i city , containing , 1 . An Enquiry whether Vapour 
be a Conductor of Electricity . 2. Some Experi- 
ments , to afeertain the Direction of the EleCtric 
Matter , in the Difcharge of the Leyden Bottle : 
with a new Analyfis of the Leyden Bottle. 3. Ex- 
periments on the lateral Explofion , in the Difcharge 
of the Leyden Bottle. 4. The Defcription , and 
Ufe , of a new P rime-conduCtor . 5. MiJ'cellaneous 
Experiments , made principally in the Tears 1771 
and 2772. 6. Experiments and Obfervations on 
the Electricity of Fogs , &c. in Purjuance of thofe 
made by Thomas Ronayne, Efq ; with a Plan of 
an ElcCtrical Journal, &c. By William Henley, 
F. R. S. ' p. 389 
XLII. A Letter from David Macbride, M. D. 
to John Walfh, Efq ; F. R. S. accompanying Two 
Letters from Mr. Simon to Dr. Macbride, 
concerning 
