JOHNSON'S OBSERVATIONS OF INGRESS. 



241 



preceding pages. The transit instrument at "VVaimea was found to be 

 7 m . 13 s- 48 "West of the transit instrument at Honolulu. Assuming the 

 longitude of Honolulu to be 10 h . 31 m . 26 s -3 2 s , the longitude of Waimea 

 is 10 h . 38 m . 39 s -8 2 s West of Greenwich. 



REPORT of MR. R. JOHNSON on his OBSERVATION of the INGRESS of VENUS, 



1874, December 8. 



On 1874, December 7, H.M.S. Reindeer arrived and anchored to the east of 

 Waimea river. Arrangements were made with Captain ANSON, her Com- 

 mander, for the protection of the observatory ground against intrusion on 

 December 8, and that Nav. Sub-Lieut. WARLEIGH should assist the Rev. 

 Mr. Dunn during the transit. 



A tent was pitched outside the observatory inclosure to cover Mr. Dunn's 

 telescope, so that any confusion arising from our respective orders might be 

 avoided. 



On December 8, everything being in good order and the chronometers 

 compared, the sentries were posted in due time and in proper places. This 

 precaution, however, was scarcely necessary, as I had the grounds " tabooed," 

 or, as they call it, " kapu/' for the day. 



Mr. Wellings and I took up our posts about 15 minutes before the time of 

 expected external contact. 



Twelve minutes before internal contact the entire disk of Venus was dis- 

 tinctly visible, a faint ring of light beginning to appear round the edge off 

 the Sun. Four minutes and a half later the ring of light was very plain. No 

 black drop like that which we see in the model appeared at all. 



The cusps had not the sharpness they often have in the model on a good 

 day. The weather was beautiful, not the faintest cloud or mist appeared. 



Time by Sidereal 

 Chronometer N. 



At 20. 35. 

 20. 39. 30 

 20. 44. 55 

 20. 46. 34 



whole disk of Venus completely visible. 



ring of light complete. 



ring of light. 



notice to Lieut. Wellings to attend carefully. 



20. 46. 53 o{ inde 2 S lignt } beginning to appear to meet. 



20. 47. 2'3 meeting of cusps appeared to take place, and light 

 clearing. 



