CHAPTER XI. 



SUMMARY OF RESULTS AND SUGGESTIONS FOR 

 FUTURE WORK. 



IT will be seen from what has gone before that the two 

 expeditions organised by the Association to observe the 

 late eclipse met with a most gratifying degree of success, and 

 this in smite of not a few serious difficulties under which they 

 laboured. It had been found impossible to arrange and practise 

 a comprehensive programme of combined work before starting ; 

 the plans drawn up for a camp at Masur were demolished on 

 the very eve of leaving England by the spread of the plague 

 in the district of Satara ; the Egypt party had the very briefest 

 time at their disposal after arriving at their station for getting 

 ready and for drill ; whilst the Ballaarat party at Talni were 

 seriously short-handed, and had to omit several items of their 

 programme entirely. All these difficulties notwithstanding, the 

 results obtained are full of interest and value, and afford the 

 greatest encouragement for future expeditions, as the following 

 condensed summary will show : 



SUMMARY OF KESULTS. 



1 . The spectrum of the " Flash " has been successfully photo- 

 graphed on five plates. 



2. A new region of the " Flash " spectrum has been explored 

 and mapped. 



3. The bright-line spectrum of hydrogen has been followed 

 in the chromosphere to the 30th point of the series, and the 

 wave-lengths shown to agree closely with Balmer's formula. 



4. The correction to the received wave-length of the " coro- 

 nium " line detected by Mr. Fowler has been confirmed. 



5. The distribution of " coronium " in the corona has been 

 examined. 



6. Several drawings of the corona as seen by the unaided eye 

 have been made. 



7. The variation of the form of the corona with the sun-spot 

 cycle has been further illustrated. 



8. Twenty-eight photographs of the corona have been taken. 



: 150 



