Numb. 473. 
PHILOSOPHICAL 
TRANSACTIONS. 
For the Month of May , and Part of June y 1744. 
The CONTENTS. 
I. A Scheme of a DIARY of the Weather ; 
together with Draughts and Defcriptions of 
Machines fubfervient thereunto ; infcribed to 
the President and F ellows of the Royal 
Society ; by Roger Pickering, F. R. S. and 
V . D. M . Page x. 
H. A Fetter from Mr. William Watlbn, 
Apothecary , F. R. S. to the Society, con- 
cerning fome Perfons being poifoned by eat- 
ing boiled Hemlock. p. 18. 
HI. Methodus Nova Calculi Eclipfimn Ferrcc 
fpecialis ; vel quorumcunque Occur fuum 
Lunas cum Stellis , tarn err antibus quam in- 
err antibus : AuElore Chriftiano Ludovico 
Gerften, R. S. Sod '. & Math. Prof in 
Academia Giefenh. p. 22. 
IV. A Fetter from Mr. Chr. Warren, Sur- 
geon at Truro in Cornwall, to John Machin*, 
Efq\ Seer. R. S. Prof. Afir. Grelham. con- 
taining further Accounts of the Succefs of 
inje&ing 
