CHRONOMETRIC CONNECTIONS. 33 



meters, while the other estimated the time to the nearest tenth of a second 

 by the portable watches. They then changed places and the first observer gave 

 signals from the portable watches. This method eliminated the errors of 

 comparing, and was less fatiguing than taking a sidereal chronometer all 

 round for coincidence of beats. 



73. The Tenedos sailed the same night, December 5, for Kailua, Lieutenant 

 Lloyd kindly undertaking the winding. She arrived at Kailua on the 

 morning of December 7, when Professor Forbes, assisted by Lieutenant Lloyd, 

 without loss of time compared the chronometers with his Transit Clock by 

 means of Q, V, and W. 



The Tenedos sailed from Kailua on December 9 at 2 p.m. Immediately 

 before her departure Professor Forbes made another complete comparison 

 with his clock, using the same three portable watches. She arrived at 

 Honolulu on the morning of December 10, when Mr. Nichol and I made 

 the comparison with the Transit Clock, using R, V, and "W for the purpose. 

 This completed the first run to Kailua. Good observations for local time 

 were obtained at both stations in connection with the comparisons. 



74. After the Transit of Venus, the work of connecting the stations was 

 commenced. It was arranged by Captain Cator that the Tenedos should make 

 all the runs. Captain Van der Meulen, her commander, entered into it with 

 spirit, and to his valuable assistance the success of these somewhat long and 

 tedious operations was due. A proper berth was fitted up on the lower deck 

 of the Tenedos, on the lockers round the mainmast. The chronometers, in their 

 own gymbal-boxes with the lids removed, were placed, two and two, in well 

 padded boxes, which were placed in the prepared berth, surrounded by about 

 8 inches of horse-hair padding to check the vibrations of the screw propeller. 

 On December 13, 20 chronometers were thus placed ; the three belonging to 

 the Tenedos remained in their own berths in the captain's cabin. 



75. The Tenedos made the following journeys with the chronometers : 



h 



1874, December 14. 3. Left Honolulu. 



22. Arrived at Kailua. 



17. i. Left Kailua. 



2 1 . Arrived at Honolulu. 



19. o. Left Honolulu. 



20. i. Arrived at Waimea. 

 6. Left Waimea. 



21. o. Arrived at Honolulu. 



22. 2. Left Honolulu. 



