INTENSITY OF CORONAL LIGHT DURING THE SOLAR ECLIPSE OF 1893. 437 
within a stockade, was conveniently near the moorings of the Alecto, and sufficiently 
removed from the huts of the people, who are here mainly Sereres and Wolofs, to 
secure the necessary privacy. The greater number of the packing cases containing 
the instruments were landed before nightfall of the day of arrival, the ground being 
meanwhile measured out, and the positions for the various observing huts of the 
party assigned. With the help of the men of the Alecto, together with a few 
Sereres who were engaged to dig and to make concrete for the foundations for the 
equatorials, the erection of the huts and instruments proceeded as rapidly as the 
excessive heat would permit, and before the end of the week everything was in 
adjustment, and we had a clear six days before us for the necessary drill and final 
preparations. The huts used on this occasion were designed, and their construction 
in England superintended, by Quarter-Master Sergeant Kearney, R.E. As they 
answered their purpose remarkably well, being readily and quickly put together and 
taken down, and being sufficiently rigid when erected, it may be desirable to give a 
short account of them here in view of future expeditions. The design is seen in 
plan, cross-section, and external elevation in tig. 2, which is drawn to a scale of 
6 feet to an inch. 
The materials required are :— 
feet. 
8 pieces white deal scantling 3" X 2" X 13' =104 
9 
Li 
33 33 33 
„ 3" X 2" X 
10' = 
20 
12 
33 33 33 
„ 3" X 2" X 
7' 6" = 
90 
18 
33 3 ) 3 3 
q" v 9" v 
j 5 O S\ i-i /\ 
6' 2" = 
1 11 
325 
Allowance for waste in trimming . 
. 
25 
350 
4 pieces white deal scantling 3" X 3" X 6' 6" = 26 
Allowance for trimming. 2 
28 
1 ridge piece 6" X l" X 13' =13 
Allowance. 1 
14 
12 pieces for battens 3" X X 8' 6” =102 
Allowance for trimming 18 
120 
Willesden canvas 53" wide, 46 yards. 
