34 



s. Nakanmra and K. Honda : 



our stay at the lake. The periods recorded during this second 

 series Sept. 14-19 are given in the next table. The actual presence 

 of some of them is liowever doubtful owing to their small 

 amplitudes. 



TABLE 18. 



Otsu. II. 



m. 



in. 



in. 



•231.3 X 5 



26.5 X 3 



10.3 X 1 



230.1 X 4 



25.5 X 6 



10.0 X 4 



228.0 X 1 



24.5 X 1 



9.6 X 5 



224.0 X 5 



23.6 X 22 



8.6 X 6 



222.3 X 1 



"" 22.9X 3 



8.5x10 



73.7x15 



21.2 X 2 



7.1x11 



30.1x10 



20.8x10 





2G.9X 4 



20.3 X 3 





The probable value of the period for the slowest motion is 2.31.2 m. 



Seta. 



Observations extending from the 15tli. to the ITth. August 

 gave the following periods, but none of them were quite certain 



TABLE 19. 



Seta. 



71.1 X 3 



68.9 X 9 



Ul. 



32.9 X 9 

 32.7x10 



ni. 



31.9x10 



