Nomography to Discontinuous Motion of a Liquid. 135 

 Fisr. 4. 



** ^T l20 



Nomocrrain for r 



wliere 

 7r .F(<9x) = cos%{log(l-cos%) -log (cos 0- cos %) [when (9<% 



and 

 tt . F((9%) = cos % {log (1-cos tf -log (cos %-cos 0) } +tt sin % 



when Q>X' 



