Account of pendulum experiments undertaken in the Harton Colliery, for the purpose of determining the mean density of the earth, by G. B. Airy

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                                October 20. Observers for the day, Mr. Dunkin and
     Mr. Ellis, from the end of Swing 74 to the beginning of Swing 77;
     <s>[?]</s> for the night, Mr. Simmonds and
     Mr. Criswick, from the <s>beginning</s> end of Swing 77 to the
     beginning of Swing 80.
October 21. Observers for the day, Mr. Pogson and Mr.
     Rumker, from the end of Swing 80 to the beginning of Swing 82. The end
     of Swing 82 was observed by Mr. Dunkin and Mr. Pogson.
     <s>[?]</s> The Fourth Series and the whole
     operation closed with Swing 82.
October 22. I arrived from Greenwich
October 23. I inspected the instruments in position,
     and dismounted them.
October 24. The instruments were mounted in the Central
     Hall of South Shields, and I explained the
     nature of the observations to an assembly of the
     residents of South Shields and its neighbourhood.
October 25. The instruments were finally dismounted
     and packed up for return to Greenwich; and
     the party dispersed.

<s>26</s>24. On terminating this general history of the operation,
it is proper perhaps that I should briefly allude
to the sources from which the expenses were defrayed.
     The Royal Society, in granting the loan of their
pendulums and clock, not only enabled me to
                            
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Manuscript details

Author
George Biddell Airy
Reference
PT/54/5
Series
PT
Date
1855
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Account of pendulum experiments undertaken in the Harton Colliery, for the purpose of determining the mean density of the earth, by G. B. Airy, 1855. From The Royal Society, PT/54/5

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