558 ON THE RELATIVE FORCE OF GRAVITY AT KEW AND GREENWICH. 
Addendum. 
Hesults ol the swinos at other stations which were taken with the same pendulums, 
by Colonel Heeschel, and by Mr. Edwin Smith of the United States Coast and 
Geodetic Survey. They are reduced to the temperature of 62° F., and to the 
density of air under the pressure of 26 inches at the temperature of 32° F.; but 
they are not reduced to the seadevel. 
SiviiKjs hy Colonel Heeschel. 
Stations. 
Height 
in feet 
above 
sea. 
No. 4. 
No. 6 (1821). 
No. 11. 
London,* Langham Place, Cellar . 
85 
86157-31 
86055-97 
86109-59 
Washington, Smithsonian Institute 
34 
86109-45 
86008-35 
86060-93 
Hoboken, Stevens Institute . 
30 
86115-23 
86014-06 
86066-93 
Whence 
Greenwich—London . . . . = 
+ 1-64 
-h 0-83 
+ 4-05 
London—Washington. . . . = 
+ 47-86 
+ 47-62 
+ 48-66 
Washington—Hoboken . . . = 
- 5-78 
- 5-71 
- 6-00 
Swings hy Mr. Edwin Smith. 
Stations. 
Height 
in feet. 
No. 4. 
No. 6 (1821). 
No. 11. 
Auckland. 
261 
86102-75 
86002-11 
86054-13 
Sydney. 
140 
86090-93 
85990-32 
86042-08 
Singapore. 
45 
86021-13 
85919-97 
85971-34 
Tokiof. 
20 
86099-83 
85995-17 
86046-91 
San Francisco. 
375 
86103-77 
86003-13 
86055-66 
Washington. 
Whence 
34 
86109-31 
86009-29 
86061-41 
Auckland—Sydney . . . . = 
+ 11-82 
+ 11-79 
+ 12-05 
Sydney—Singapore ....=: 
+ 69-80 
+ 70-35 
+ 70-74 
Singapore—Tokio.= 
- 78-70 
— 75-20 
- 75-57 
Tokio—San Francisco . . . = 
- 3-94 
- 7-96 
- 8-75 
San Francisco—Washington . = 
- 5-54 
- 6-16 
- 5-75 
* This station is at No. I, All Souls Place, Laiigham Place ; it is about hSO feet S.E. of, aud 14 feet 
lower ill level than, Mr. Beowne’s house in Portland Place, which was Kater’s station. The value of 
Greenwich—London (Portland Place) = + 0 48, with Invariable Pendulum No. 12; it was determined by 
Sabine in 1828, see ‘ Phil. Trans.’ for 1829, p. 87. 
t Mr. Edwin Smith remarks of the observations at Tokio, that “the vibration-number of Pendulum 
No. 4 is between three and four vibi-ations too great. I can only explain this discrepancy by the supposi¬ 
tion that some foreign material was adhering to the pendulum during these observations. Great care 
was always taken in wiping the pendulums before suspending them.” 
