894? Colonel Beaufoy on the Diurnal Variation of the' Needle. 
Thermometer as before. I was informed that several domestic 
fowls in my yard went to the place wherein they roost, as if for 
that purpose, but did not actually perch. At 14' we had ano- 
ther gleam ; touch paper was readily burnt, by help of the lens. 
At 07' it instantly inflamed with intensity. About 40' the 
sun became so much obscured by clouds, that little could be seen, 
and so it continued till the eclipse was over, except for about \\ 
min. just before 0. The thermometer gradually rose to about 
64® 00', or a little more, but reached no higher during the re- 
mainder of the day. The gloom at the greatest occultation was 
to the full as considerable as I had expected. I thought it was 
equal to the twilight, when the sun is from 6° to 7° below the 
horison. Venus, I think, becomes visible when the sun’s de- 
pression is 4^^ or 5®. 
HilhTop., Wetherby^ ) 
mh Sept, ism j 
Art. XXV. — Quarterly Abstract of the Diurnal Variation of 
the Magnetic Needle, ^c. By Colonel Beaufoy, F. R. S. 
Monthly Mean Variation of the Magnetic Needle. 
Variation West. 
f Morning, 
24° 
00' 
42" 
May, ■ 
< Noon, 
24 
40 
08 
( Evening, 
24 
00 
00 
r Morning, 
24 
29 
50 
June, - 
< Noon, 
24 
09 
16 
Evening, 
24 
00 
48 
( Morning, 
24 
28 
41 
July, ■ 
Noon, 
24 
09 
00 
Evening, 
24 
00 
26 
Mean Heat. 
May, 50®4O 
June, 58.47 
July, 60.75 
Latitude, 51° 0T 44".0 N. ; Longitude west in time, 1" 9,% 
Rain and Evaporation. 
Month. 
Rain. 
Evapor. 
May, 
J une, 
July, 
Inches. 
^.080 
1.724 
1.906 
Inches. 
4.270 
4.091 
0.950 
