NO. 8.] 



PENDULUM OBSEEVATIONS. 



27 



The observations marked with a note of interrogation are entered as unreliable! and 

 are therefore not used in the computations. 



34 





The first 5 observations in the second series must be inaccurate, as there is far too 

 great a difference between them and the succeeding observations. They are therefore not 

 taken into consideration. 



