374 CAPTAIN W. DE W. ABNEY AND DR. T. E. THORPE ON PHOTOMETRIC 
Cloud. 
Aug. 
J J 
if 
35 
55 
35 
55 
17 
5 
18 
3 
19 
3 
20 
2 
21 
4 
22 
4-5 
23 
5 
24 
5-6 
25 
8-9 
26 
6-7 
27 
8-9 
28 
7-8 
Sun seen througli haze. Clouded at times. 
Sun unclouded at time of totality. 
35 55 35 
53 53 55 
Sun seen through thin cloud. 
Sun seen through haze. Much rain in night. 
3 3 5 5 55 5 3 
Sun frequently clouded. 
Sun clouded over; much rain at times. 
Sun seen through faint clouds. 
Dense clouds. No Sun ; much rain at times. 
Hazy at time of totality. Strong east wind with showers at times. 
The observing party left the “Fantome” shortly before daybreak on the morning of 
the eclipse, and in a sliort time everything was in readiness for the observations. The 
sky was almost completely clouded over. A light breeze from the E.S.E. drove up 
sluggishly moving cumuli in great detached masses, some as high as 40° above the 
horizon, i.e., double the height at which the Sun would be at time of totality. The 
high land of Grenada was completely enveloped in cloud, and heavy rain was falling 
in the middle and over the western slopes of the island. Over the low land of Point 
Fort Jeudy, across the bay, behind which the Sun would come up, w^as a mass of 
cumuli, with flattened bases, seemingly motionless. At 6.15 there was a slight shower 
of rain, and at 6.1 8 the partially eclipsed Sun was seen for a few seconds. lu spite of 
the fact that the Solar disc was being rapidly obscured, the clouds were gradually 
breaking up into detached masses. By about 6.40 the greater portion of them had 
drifted away to the North. The equatorial was then put on the Sun, and the 
gradually diminishing crescent observed by reflection from tlie photometric screen. 
The clock went fairly well, and no adjustment was necessary to keep the limb in 
contact with the pencilled line of the image on the screen ; indeed at no time during the 
totality was the edge separated from the circle by more than the thickness of the 
pencil line itself. The shadow of the Moon was plainly visible on the white disc. 
The moment of totality w^as 7hr. 10m. 14.6s. (L.M.T.), the calculated time as determined 
by interpolation from the data furnished by Mr. Hind for Caliveny and Point Salene, 
was 7hr. 10m. 18s. With respect to the observation, it may be stated that it was 
determined by means of a chronometer, the error and rate of which had been ascer¬ 
tained from observations of double altitudes made during the preceding 10 days 
by Captain Archer. 
After a few moments’ observation of the corona, the structure of which was 
admirably pictured on the white screen in the equatorial, the photometric comparisons 
were begun in the order previously fixed upon. 
