592 Transactions. 



10. Another value for Wellington is obtained from the Canadian value 

 of Norfolk Island, of — 



H. ra. s. 



11 11 41-146 (Klotz, p. 197). 

 22 14-998 Paragraph 7. 



Doubtless Bay .. .. 1133 56-144 



5 8-931 Paragraph 7. 



Bolton Street .. .. 11 39 5-075 



1-200 Paragraph 7. 



Wellington (Mount Cook) .. 11 39 6-275 



11. The adopted value for the longitude of Wellington, Mount Cook, 

 is llh. 39m. 6-31s. (=174° 46' 34-65") ; Mount Cook-Hector Observatory, 

 2-04s., giving llh. 39m. 4-27s. (= 174° 46' 4-05") as the adopted longitude 

 of the Hector Observatory. 



(B.) Latitude. 



12. The latitude of the Hector Observatory is derived by triangulation 

 from that of the Mount Cook Observatory, the latitude of which was deter- 

 mined by Mr. C. W. Adams in 1883 by zenith telescope observations of 

 99 pairs of stars from the Melbourne General Catalogue for 1870. 



13. The latitude of the Mount Cook Observatorv is S. 41° 18' 0-59* 

 + 0-05".* 



14. The latitude of the Mount Cook initial is S. 41° 17' 59-30" from 

 3 and 4. 



15. The latitude of the Hector Observatory transit pier is S. 41° 17' 

 3-75 // , applying the difference in latitude in 4 of 55-55s. 



(C.) Height. 



16. The height of the top of the transit pier at the Hector Observatory 

 was determined by the Public Works Department, by careful levelling from 

 the tide-gauge at the Wellington Harbour Board Wharf ; and was found 

 to be 415-643 ft. above the mean sea-level determined by the harmonic 

 anaylsis of the tide-gauge records for the year 1909. 



* C. W. Adams : Surveys of New Zealand, Report for 1882-83, p. 11. Wellington : 

 Government Printer. 



