26 Report on the Solar Eclipse Expedition to Ghoglee. 



of the prominences corresponding to a number of lines in the violet 

 region of the spectrum. On the last plate, which was exposed very 

 shortly after the end of totality, there is a broad spectral band full 

 of bright and dark lines of varying intensities, corresponding to 

 irregularities in the sun's limb and the presence or absence of promi- 

 nences. Many of the bright lines run out into the cusps. The 

 scale of this photograph is such that H and K are 10 mm. apart. 

 By an oversight the prism was not used with Plates 1 and 2 as was 

 originally intended. 



Mr. Meehan also exposed the whole of the nine plates allotted to- 

 him. Three of these show the coronal rays during totality. The 

 fourth has the coronal streamers quite distinct, although the sun is- 

 already reappearing with a trace of Baily's heads. The fifth plate, 

 taken several seconds later, shows the solar crescent still further 

 disclosed, but with the whole of the moon's disc distinctly outlined 

 against the background of corona. In the last plate there is nothing 

 to be made out beyond the over-exposed solar crescent; the remain- 

 ing three plates are blank. I am under great obligation to 

 Mr. Meehan for his valuable assistance with this instrument, as well 

 as for help in other directions. 



In the small prismatic camera four plates proved to be as many as 

 I could dispose of. The actual exposures attempted were 2'5 sees.,. 

 47 sees., 19'6 sees., and 14'0 sees, respectively. The resulting nega- 

 tives show numerous rings and lines ranging from 1474 K to about 

 W.L. 3000. The lines are sharpest in the first plate, while the 

 1474 K ring comes oufcmore fully in the second and fourth negatives. 

 The third plate is unfortunately blank. 



The plate in the integrating spectroscope, which was used without 

 a condensing lens, shows a spectrum of three strong bright lines 

 with a number of feebler ones between them. With an exposure of 

 about a minute, terminating just before the end of totality, the plate 

 is decidedly under-exposed. 



The makeshift chronograph, while working well for the other two- 

 observers, failed to record Mr. Meehan's signals distinctly, owing 

 probably to the greater length of the cord required to reach his 

 telescope. 



On "Wednesday, 26th January, we broke up our camp at Ghoglee 

 and sailed from Bombay on the 29th, reaching Edinburgh on the 

 21st February. 



I wish here to record my indebtedness to all the officials and 

 private individuals, British and native, by whose kind aid the object 

 of the expedition was so much furthered and our visit to Central 

 India made so pleasant as well as scientifically interesting. 



