r 5as 



tlio (lifTci'oiiros. I^^rom llii> wc (Icrlxc lor llic |»r((l>;il)lc oridi' ; O.OOO. 

 which with regard to the accuracy is jtcriiiissihh^ so that tiie 

 eqiuitioii (5) with tlie cucl'licieuis ((>) well represejits oiir ohservatioiis. 

 Froni equation (1) follows tor the \()lnine between the divisions 

 and Q: 



T^ =••'. j^-2 [-ƒ/'.'/-'•{ =.s, C^' 



where 



^J- 



- (I'. ,1.1 



Q' -rr-. Q + V and 





/ ' 2 / ^ a / 



Tal)le \ I gi\-cs for the \aliics for O from to T)!) the values 

 computed ill this way for (/, Ihe i-cdiiccd i-cadiiius. lly means of 

 this table we may inter alia judge of the irregularity of the lube. 



T A B L E XL 



