( ^ 9.1 ) 
(Numb. '5 2 p»^) 
PHILOSOPHICAL 
TRANS ACTIO ISIS.. . 
For the Months of March and April, 1709. 
The G O.N TENTS. 
% 
L Microfcopical Ohjervations on the Yalates of Oxen^^c. By 
Mr. Amhony van Leeuenhoek, F. R. S. 
II. An Experiment touching the Freezing of Common Water, and 
Water purged of Air. By Mr. Fr. Hauksbee, F. R. S. 
III. An Account of an Experiment touching the Freezing of Com^ 
men Water, Ting'd with a Liquid f aid to be ExtraUed from 
Shell-Ldc. By MrTi. Hauksbee, K R.5. 
IV. An Experiment touching the Weighing of Bodies of the fame 
Species, but of xxery tfnequal Sutfaces, in Common Water, being 
of an equal Weight in Common Air. By Air. Fr. Hauksbee, F.R S. 
V. A Letter from the Reverend VHr. W.Derham, F.R. S. to Dr. 
Hans Sloane, R. S. Seer, giving an Account cf fonte Inundati- 
ons, Mon/lrous Births, Appearances in the Heavens, and other 
Ohfervables he received Jrom Ireland. With his Ohfervations 
on the Eclipfe of the Sun, Sepc. 3. and of the Aloon, Sept. 
18. 17C8. ^ 
VL A' Let ter from Air. Ralph Thofesby, F.R.S. to Dr. Hans 
Sloane, R. S. Seer, concerning fame Roman Antiquities 
ferved in Yorkfhire. ■ . i'.. 
VII. Fart of d Letter from Wm. Burnet Efq-, F. WS. to Dr. Hans. 
Sloane, R. S. Seer, concerning the Icy Alountains of SwiiZQi- 
land. • % : . . 
VIII. A Brief Narrative of the Shot of Dr. Robert Fielding with 
a Ai ilsket -Bullet , and its fir a nge maitncr of coming out of his 
Head-) where it had lain near Fbjrty Tears. Written by Hinfelf. 
An Account of Books* viz. I. Frxlebfwnes Chymicne 0%.o- 
mx habit£ a Johanne Freind, M. D. Edis Chrijli AJumno. 
II. An Account of Animal Secretion, the quantity of Blood in 
the Human Body, and Mufcular Motion. By James Keili, M.D. 
