Numb. 4 S/. 
PHILOSOPHICAL 
TRANSACTIONS. 
for the Months of April, May , and Part of 
June, 1748 . 
I. A Propofal for Checking in fome Degree 
the Progrefs of Fires ; by the Rev . Stephen 
Hales, D. D. & Page 277 
II. Some Obfervations , made during the la ft 
three Years , of the Quantity of the Varia- 
tion of the Magnetic Horizontal Needle 
to the Wejlward \ by Mr . Geo. Graham, 
F. R. S, at his Houfe in Fleetftreet, Lon- 
don. p. 279 
III. A Fetter from the Right Hon. John 
Earl of Orrery to Martin Folkes Efquire f 
Pr. R. S. inclofng an Account of the Cor- 
nel-Caterpillar, coiitained in a Letter from 
the Reverend Mr. Philip Skelton to His 
Lordfhip. . L A - p. 281 
The Rev. Mr. Skelton ’ s Letter to the Earl of 
Orrery. p. 28 1 
IV. The ExtraEl of a Letter from Dr. James 
Mounfey, Phyfcian of the Czarina 's Army ^ 
to 
