Total Eclipse of the Sun, May 28, 1900. 341 



Meteorological Observations (on board). 



G. Donnelly, Yeom. Sig. W. Hearne, Sig. 



E. Gant, Lg. Sig. J. Beach, Sig. 



A. Enstidge, Sig. 



Landscape Colours (on shore). 



Capt. F. V. Whitmarsh, E.M.L.I. Lance-Corpl. Wade, E.M.L.I. 



Ship's Steward D. Green. W. Birkett, Writer. 



Landscape Colours (on board). 

 Fleet Paymaster A. W. Askham, E.N. Lieut. W. J. Frazer, E.N. 



Shadow Phenomena (on shore). 

 Mr. C. Prynn, Carpr. E.N. 



Shadow Phenomena (on board). 

 Lieut. H. E. Shipster, E.N. 



Photographers. 

 J. Knight, S.B. Steward. B. Bulbrook, A.B. 



Aide-de-Camp to Sir Norman Loekyer, K.C.B., F.R.S. 

 Mr. C. C. Lambert, Mid. E.N. 



Time Arrangements. 



According to the Admiralty chart, the latitude and longitude of 

 the place of observation are 38 11' 20" N. arid 33'66' W. respec- 

 tively. For this point, the. times and position angles of contact 

 derived from the formulae given in the ' Nautical Almanac Circular,' 

 No. 17, were as follows : 



Beginning of totality, May, 28 d. 4 h. 12 m., 51'7 s. 

 End 4h. 14 m., 10'5 s. 



Duration of totality 1m., 18-8 s. 



Position angle of first contact, 87 3 - 5' from N. towards W. 

 last 93 47-3' E. 



The experience of the Indian eclipse of 1898 suggested that the 

 duration of totality was too long, and for the practical working during 

 the eclipse the adopted time was 75 seconds, so that there would be 

 no chance of spoiling the coronagraph plates by exposing them after 

 totality. The face of the eclipse clock was graduated accordingly. 



The arrangements for securing signals at definite intervals before 

 totality was identical with that employed in Lapland and India. An 

 image of the sun projected by the finder of the 6-inch two-prism pris- 

 matic camera was viewed on an adjustable screen, marked in such a 

 way that it was easy to see when the cusps subtended angles of 90 J 



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