MAGNETIC OBSERVATIONS. 
Note.— During the expedition of H.R.H. to Ruwenzori, Commander Cagni 
undertook the magnetic readings, establishing stations at eight points: 
Bujongolo, Ibanda, Fort Portal, Kichiomi, Bimbya, Entebbe, Port 
Florence, Mombasa. 
The magnetic instrument used by him for the readings was modelled, not quite 
successfully, on the French “ Brunner,” and of the small size suited for 
travelling. This defective apparatus made the observations difficult and 
fatiguing. 
The calculation and discussion of the results obtained were entrusted to 
Prof. L. Palazzo, Director of the Central Bureau of Meteorology, in Rome. 
This specialist was fain to conclude that, in order to derive any useful data 
from Cagni’s readings, he would have to repeat the readings with the instrument 
in question and with another more accurate, in one at least of the places where 
Cagni had established magnetic stations. This would enable him to obtain a point 
of reference which would be useful for the reduction of the observations made 
at all the other stations. Fortunately such an arrangement is now rendered 
possible by the circumstance that Prof. Palazzo, who left in July charged with 
a scientific mission to Zanzibar, proposes to land on the way at Mombasa, and 
there take magnetic readings, Mombasa being one of the magnetic stations 
included in the itinerary of the Ruwenzori Expedition. In this way there is 
reason to hope that sufficiently correct and practical results may be obtained 
from Cagni’s magnetic observations. The publication of these observations is 
thus necessarily delayed till Prof. Palazzo’s return from his mission. They will 
then form the subject of a separate memoir, which will be published either in 
the Annals of the Royal Hydrographic Institute, or in those of the Central 
Meteorological Bureau. 
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