406 
PACIFIC EXPLORATION: L. J. BRIGGS 
TABLE I. 
Gravity Determinations on Board Ship at Harbor Stations 
1914 
With San Francisco as base, 
cm. 
Csec.)2 
g at Wellington, N. Z., 
observed, instrument No. 1 980.316 
by pendulum (Wright) 980.292 
+0.024 
g at Sydney, N. S. W., 
observed, instrument No. 1 979.68 
by pendulum (Smithsonian tables) 979 . 69 
-0.01 
1915 
With New York as base, 
g at Colon, Panama, 
observed, instrument No. 2 978.196 
instrument No. 5 978.236 
978.216±0.013 
g at Balboa, Panama, 
observed, instrument No. 2 978.175 
instrument No. 5 978 . 195 
978. 185 ±0.007 
g at San Francisco, 
observed, instrument No. 2 979.940 
instrument No. 5 979.995 
979.968=^0.019 
by pendulum (Smithsonian tables) 979 . 98 
0.012±0.019 
at my disposal in the construction of a new apparatus of glass, which 
was used on the return voyage. 
I am also deeply indebted to Dr. C. G. Abbot, Director of the Astro- 
physical Observatory of the Smithsonian Institution, for his assistance 
in connection with the steel apparatus, and for valued suggestions re- 
garding the construction of the later form. 
Lieut. R. S. Wright, R.E., has kindly supplied the value of g at 
WelHngton from his unpublished pendulum observations made in con- 
nection with the Scott Antarctic expedition. 
The voyage in 1914 was made with grants from the Australian and New 
Zealand governments, in connection with the Australian meeting of the 
British Association for the Advancement of Science. I desire to express 
my obligation to these governments and also to the American Associ- 
