154 TRANSACTIONS OF THE [ApPR. 1, 
theory that they are atmospheric phenomena mainly; as the at- 
mosphere in that region is steadier, and the phenomena of irreg- 
ular refraction would not be so pronounced. In Montana and 
Manitoba, the bands were well seen, and described by some as 
visible wind. 
Meteorological observations proper were made by Prof. Payne 
and Prof. Upton, the latter making the fall in temperature 
greatest ten minutes after totality, when it amounted to 5°. 
The barometric fluctuation attributable to the eclipse was practi- 
cally zero. The humidity rose 30 per cent. There was no dew, 
but papers were perceptibly dampened. The velocity of the 
wind died down, but increased after totality. There was a 
slight veering to the west near totality, due perhaps to change 
of vapor conditions in the upper air. It is now sufficiently 
demonstrated that the barometer need not be observed in future 
eclipses. 
(2) Telescopic Observations. 
Contact-observations were made in abundance, and will serve 
for the very accurate calculation of the position of the moon’s 
centre. Prof. Swift’s search for intra-mercurian planets was 
frustrated by clouds. 
Photographic methods had not heretofore sufficed to show 
the detail of the polar streamers of the corona; and the tele- 
scope was used by many, with much success, in detailed sketch- 
ing of these filaments. They are not radial from the sun’s 
centre, but from areas about the sun’s poles. For the most part 
they are straight, and give the impression of shooting out from 
the sun as if it were a disc and not a sphere. Brashear sketched 
these very neatly on a sheet of ground glass, witha faint light 
behind it to illumine it slightly. Black and white being re- 
versed, the glass could be used like an ordinary negative in 
printing. 
(83) Cameras and Photographic Telescopes. 
These were used by the score, and of great variety. The most 
important work was that of the Pacific Coast Amateur Photo- 
graphers’ Association, which secured 167 plates with great varia- 
tions of exposure, sensitive plates, and photographic apparatus. 
Mr. Burekhalter used a 104-inch Brashear reflector, obtaining 
excellent pictures of the corona. Prof. Pritchett was pro- 
vided with one of the 6-inch Dallmeyer portrait-lenses belonging 
to the Naval Observatory, and his negatives show a fine outer 
corona. Mr. Barnard, with a 3-inch telescope, secured one of 
the best photographs of the corona ever taken. 
The Harvard party, in charge of Mr. Pickering, had 14 tele- 
