( 8i ) 
(Numb. 31 5J 
PHILOSOPHICAL 
TRANSACTIONS. 
For the Months of May af?d June, 1708. 
The CONTENTS. 
I. An Account of the Repetition of an Experiment^ touch’ 
ing Motion given Bodies included in a Glafs by the Ap- 
proach of a Finger near its out fide : With other Experi- 
ments on the Effluvia of Glafs, By Mr. Fr. Hanks bee, 
F. R.S, 
ir. An Account of fome Experiments touching the EleBricity 
and Light producible 'on the Attrition of fever al Bodies, 
By Mr. Fr. Hauksbee, F. R. S. 
III. An Account of an Experiment of the different Denfities 
of the Air, from the greatefl Natural Heat, to the Great- 
eji Natural Cold in this Climate, By Mr. Fr. Hauksbee, 
F.R,)^. 
IV. Joannis Keiil ex Mde Chrifti Oxon. A.M. Epifiola ad 
Cl. Virum Gulielmum Cockburn, Medicinee DoBorem. 
In qu i Leges AttraBionis aliaque Rhyjices Principia tra- 
duntur, 
V. Microjcopical Obfervations upon the Tongue in a letter 
to the Royal Society from Mr. Anthony Van Leeuwen- 
hoek, F. R. S. 
VI. Part of a Letter from the Reverend Mr. W, Derbam, 
F. R. S. to Dr. Hans Sloane, R. S. Seer, concerning 
the Migration of Birds. 
M 
I. Am 
