C 279 ] 
Thefe Hints, from. one who never faw a Hbufe 
on fire, will, 'tis hoped, be farther improved by 
thofe who have more Experience and Skill in thefe 
Affairs. 
\ f v.w , • ' . ■. ‘ • 
■< !■—■ > — - > ■■»■■■ - - ■ " ■ 
l '' ^ ^ ' { ' 
II. Some Obfervations , made during the, l aft 
three Tears , 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 Fleet ftreet, Lon- 
don. : ’ 
1748. 
t 
\ 
' ■ .vv. ' Y ■ ; 
► ' . . 1 r 1 -* * 
O M 
‘1747 March 26 
- - - 17= 0 
' . n iv.U ,c 
2$ 
. id * 17= 0 
March 1 8 
-• - *“ 17=10 
t X w ' i 
21 
- - - 17=10 
April 
22 
- - ^ 17=15 
May 
4 
- - - 17=18 •> 
14 
- - - 17=20 
16 
- - - 17=15 
\ Dec . 
18 
- “ * I 7= 2 5 + 
Febr. 
24 
- - - i 7 = 3 o 
1747 Dec. 
ip 
- * - 17=40 
Jan. 
4 
- - - 17=40— 
? * 
•v 
The Inclination of the dipping Needle has been 
during the fame time about 734 Degrees. 
O o 2 
N. B. 
