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SECTION V. 



Horizontal Force, Inclination, and Declination Results at the Ice Station, 

 McMuRDo Sound. 



Table VI. — Horizontal Force Eesults. 



Table VII. — Inclination Results. 



Declination Result. 



SECTION VI. 



Inclination, Total Force, and Declination Results during South-Eastern Sledge Journey, 



November, 1903. 



Observations for Inclination and Total Force were made by Mr. Bernacchi with Dip Circle No. 27. 



The Ice Station, McMurdo Sound, was used as a base station, and observations for Inclination and to 

 determine the Constant A, for reducing Total Force observations, were made here on November 8 as 

 follows -. — 



1903 



November 8 



h. m. 



12 p.m. 



47 „ 



1 29 „ 



4 48 „ 



Inclination, with Needles 1 and 2, polea direct. 

 Obsei-vation, -with Needles 3 and 4, to determine A. 

 Inclination, with Needles 1 and 2, poles reversed. 

 Observation for absolute Horizontal force, with Unifilar No. 25. 



The results of these observations give the value of Constant A = log-i 1-55706, which has been used in 

 reducing the Total Force observations. 



The observations for Inclination have been corrected for instrumental difierences (see Section III.). 



