Numb. 4 16 
PHILOSOPHICAL 
TRANSACTIONS- 
For the Months of ’November and December, 1732. 
The CONTENTS. 
I. Two Letters from Mr Stephen Gray, F. ^.S. 
to C. Mortimer, M. V. Seer < 2 ^ 5 . con- 
taming farther Accounts of his Experiments 
concerning Electricity. 
II. EPHEMERIDES METEOROLOGfC/E, 
Barometrical, Thermometries, Epidemics^ 
Magnetics, ULTRAJECTIN/E con/cript , s 
a Petro Van Mufchenbroek, L. A. M.Med. 
O' Phil. D. Thil. O' Mathej. Trofeff. in Acad. 
Ultraj. Annis 1730, Lf 1751. 
III. A Letter from Mr. Jac. Theod. Klein, 
Secret. Tan. O' F. % S. to Sir Hans Sloane 
TaA'Jpr. <%.S. Or. ferving to accompany the 
Ticlures of a Very extraordinary fofiiie Skull 
of an Ox with the Cores of the Horns $ of 
the Plica Polonica mentioned in Tran fa ft.. 
N° 4175 and of a very large Tumor of the 
Eye. Tranflated from the Latin by T. S. 
M. T . 
IV. Jn 
