Report on the Solar Eclipse Expedition to SahdoL 5 



path of the rays from the sun to the coelostats, which were placed at 

 a height of only 2 feet 8 inches from the ground. 



The character of the ( weather was practically uniform during our 

 stay at Sahdol. At night the minimum temperature was about 32 

 up to January 20, afterwards a little warmer (not falling below 39, 

 on January 23 and 24). At about 7.30 A.M., soon after sunrise, the 

 temperature began to rise rapidly, attaining a maximum of about 

 80 at about 2 P.M., and remaining near this point from noon till 

 about 4.30 P.M., when a fall nearly as sudden as the rise began. The 

 air was nearly saturated with moisture at night and very dry in the 

 daytime. There was heavy hoar frost at night. 



These conditions seriously limited the time available for photo- 

 graphy, which could only be carried on conveniently during the hot 

 part of the day, say from 10 A.M. to 6 or 7 P.M., as there was no ready 

 means of warming the water in the dark room. 



The first clouds seen since. the party landed in India were light 

 fleecy clouds in the evening of Wednesday, January 19, and more 

 appeared in the early mornings of January 20 and January 21, dis- 

 persing in each case between 10 and 11 A.M. The day of the eclipse 

 was perfectly cloudless throughout, and the definition good. 



[For detailed readings of thermometers and barometer, see sepa- 

 rate Report by Professor Turner.] 



8. Instruments, fyc. [See separate Reports of the observers.] 



9. Huts. The chances of rain being so small, waterproof huts 

 were not considered necessary, and the instruments were protected 

 by rush thatchings laid on a framework of bamboo, which could be 

 readily removed as required. 



10. Assistance. The observers were assisted in the exposures as 

 below : 



The Astronomer Royal 



Mr. McA'Fee Recorded times of exposure. 



Mr. Harold Christie ,.....' Exposed at objective. 



Vishnoo Babaji Garnd. . . . Handed plates. 



Yenayek Narayan Received plates. 



Professor Turner 



Dondu Yenayek Exposed at objective. 



Tukaran Hanmant Handed plates. 



Shankar Devidas Received plates. 



Also 



Govind Balwant Joshi . . . . j Coiinfced geconds ^^ 



Narayan Yishnoo Apte. ... j 



A few seconds before totality, as shown by the diminishing crescent 

 of the sun, Professor Turner was to call " Get ready " ; at totality 

 to call sharply (the monosyllable " Tup " was used). The first time- 



