EXPEDITION TO POINT BARliOW, ALASKA. 



577 



Observations to determine the moment of mass of the long magnet L, n &c. Continued. 



I Date, June 17, 1881. Station, Washington, D. C. Inntrmnent, Xo. 1 1. Magnet, L,,. Mass ring suspended. Chronometer, Bond 



No. 188. Observer, M. S | 



[Date, Juno 17, 1881. Station, Washington, D. C. Instrument. No. 11. M.iguet, L,,. Mass ring not used. Chrnnonn tc :. 



No. 188. Observer, M.S.] 



II. Ex. 41- 



-73 



