Lovering and Bond on Magnetic Observations at Cambridge. 53 
July 4-5. Between 5° 28' and 5" 34’ Gott. M. T., bright dif- 
fused Northern Lights; occasionally long streamers; wane clouds 
near the northern horizon ; Magnetometer quiet. 
July 29-30. At 2" 45’ A. M. Gott. M. T. (July 30) an auroral 
arch was formed 7° above the horizon and very still. At 9» 40: it 
began its motion up towards the zenith; rose to the altitude of 
30°. At 3" 54’, the Aurora had ceased. The light was dull during 
the whole time. 
August 19-20. A steady auroral arch was observed. It was 
double and the altitude of its apex at 3554’ A. M. Gott. M. T. 
(August 20) was 7° or 8°; its color was dull white. This Aurora 
continued till 4", and at 4" 11‘ the Northern Lights had entirely dis- 
appeared. 
August 28-9. An auroral arch appeared running from east to 
west, of intense brightness and diffused, but without streamers. 
Apex nearly on the meridian and altitude 45° at 2" 30’ A. M. 
Gott. M. T. At 3" 20’ streamers shot up 60° from the horizon; 
the altitude of its highest part was about 76° 43’, as found from its 
place among the stars. 
October 22-3. Between 1" and 2" A. M. Gott. M. T. an Auro- 
ra of a steady blue light was first perceived ; it afterwards became 
brighter and whiter, the altitude was 3°; wane clouds below. At 
5" 20’, the Aurora was low. 
November 30. At 3°24’ A. M. Gott. M. T., an Aurora was 
seen of white diffused light. No regular arch was formed. The 
Magnetometer was quiet. 
It appears from this abstract of the records that the days most 
distinguished for auroral appearances are just those on which the 
declination of the magnetic meridian experienced the most extraordi- 
nary derangements. ‘This was the case on May 29-30 and August 
