80 



S. Nakamura and K. Honda. 



From this table we conclude first of all that the general level of the 

 lake was continuously sinking during the interval here given; and 

 that the amplitude of the tide at Horié seems to be somewhat 

 smaller than those at Washizu and Osaki. We can not say definitely 

 what the cause of this sinking of the level was. As the mareograms 

 at Kushimoto indicate a very slow rise of the mean level of the sea 

 on those days, and that at Misaki shows us that the sea-level there 

 had a maximum height on the 25th, it may be conjectured that the 

 mean level of the lake was higher than that of the sea, and that 

 the sinking of the level of the lake was due to the flowing out of 

 water from the lake to the sea.. As the weather was very fine, it 

 may also have been caused by strong evaporation. 



In order to compare the relative retardation of high and low 

 water within the lake, we have calculated the differences of the 

 times at Washizu and at the other stations in the next table, in 

 which + denotes the retardation. 



TABLE 37. 





Tide at Washizu. 





Eetardation at 







L 







Horié. 



Osaki. 



h 

 Aug. 24 18 



m 



13 



m 



+ 4 



m 



- 5 



H 



28 



•22 



- 1 



- 11 



L 



25 7 



44 



+ 6 



- 13 



H 



12 



7 



+ 10 



+ 5 - 



L 



18 



24 



+ 7 



+ 26 



H 

 L 











26 8 



46 



+ 3 



+ 2 



M G 



an 





+ 5 







