ßß s. Xakamiira and K. Honda. 



the present case it is variable, being the difference of two conse- 

 cutive values of v in Table 30. The result of the calculation was 

 til at 



T=17.76 minutes. 

 Tliis agrees decidedly better with the observed value than the 

 f(jrmer value calculated on the assumption of the four straight 

 incHned beds. 



