(NiJmb. 51 9 J 
PHILOSOPHICAL 
TRANSACTIONS. ' 
L ~A Letter from Mr. Anthoiw van Leeuwenhoek, 
concerning the Circulation of the Blood, in Fijhes^ 8cc, 
II. Several Experiments touching the feeming Spontaneous 
Afcm of Water. By Mr. Fr. Hauksbee, F. R. S. 
III. An Account of an Experiment touching the diferent 
Denfities of Common Water j from the greatefi degree of 
Heat in our Climate.^ to the Freezing Pointy ohfervd by 
a Thermometer. By Mr. Fr. Hauksbee, F. R. S. 
IV. An Account of Jome Experiment Sy in relation to the 
Weight of Common Watery under different Circum (lances. 
By Mr.Fr. Hauksbee, F. R.S. 
y. Epiftola D.CmdonlsGv 9 .ndl, Societatis Regalis (Loa- 
din. Sociiy ad lUuJl. Comitem D, La u Pentium Maga- 
lotti, dilfx Societatis Sociumy DeFlaturac^ Proprietati- 
bus Soni. 
yt. Part of a Letter from Mr. Ralph Thoresby, F. R.S. 
to Dr. Hans Sloane, Reg. Soc. Seer, concerning fome 
Roman Antiquities found in Yorkihire: and a Storm of 
For the Months of January and February, 1709. 
The C ON T£N T5. 
