ON THE HYDRODYNAMICAL THEORY OF SEICHES. 641 
. LAKE witH ONE SLOPE SHELVING AT ONE END. 
“Yl. 6) Dia A 
Wie, ul 
[ere we have simply to take the seiches of even nodality from the case of § 49. 
Ew = AJ,(w) sin n(t - 7) ; 
(= AF, (u) sin n(t—7) apts | wi (O2). 
eriod equation is 
J,(na) =0 ; 
T,=4rajjo, /(gh). . : 6 : : (93). 
1e nodes are, of course, the nodes of the seiches of even nodality in the right-hand 
‘the complete symmetric rectilinear lake discussed in § 49. 
following data are useful for reference in lake calculations :— 
Ratios of Periods in a Semicomplete Rectilinear Lake. 
T/T, T,/T, T,/T, T;/T, T,/T, T,/T, T,/T, T,/T, T/T, 
5462 | 3767 | -2883 | -2327 | -1954 | 1684 | 1479 | -1319 | 1190 
Positions of the Nodes. 
idler .. | 6057 
3809 BOC .. | 8825 
2 
Sas Gai) eEZOBGH| |... \O44 
Positions of Nodes for Uniform Depth. 
| Meee E5000 
1 
2a ee e200) ene se 00 
3 
TOG(gieese. | SO0005)" \.. w» | 8333 
