640 PROFESSOR CHRYSTAL 
Positions of Nodes in one-half of the Lake. 
i a0 
Dole eee “ ¥ ... |°6057 
Bol Oh eee nes af esto? 
4 3809 8825 
Bil Ol Me ae Wee SBOSO: | a cull loretliea ets “Ie eneeoune 
| 
Gall Sea learesal, oa. ao be Me ee ee | met 
Positions of Nodes when Depth is uniform. 
| : | 
Lal 30 | | 
| | 
Pees er s ieay i Osea een eee | a EO EEE 
2 ‘5000 | | 
Sol Opn vied a bs ee em Gas | 
uw«~ | --—-————————_- — es | a | 1). | 
4 | +2500 ‘7500 | 
| | 
Gees ets NP ee rl —— 
DallaenOy Ibe bos AO UOK tae Uhm ea Rael le ee, OCD 
6) ok (G67 | a | ee | 800041) cee eer el ere 
LAKE WITH ONE SLOPE. 
§ 50. 0 p A 
Fie. 10. 
Obviously the seiches are the same as the seiches of even nodality in the symmetric 
truncated lake of § 48. 
Hence we have Ew = ALY, (na)J,(w) — J,(na)Y,(w)} sin n(t— 7) ; 
G = 2A (¥y(na) 5 (w) —J,(na)¥,(w)} sinn(t—7). . * : (90). 
The period equation is Y,(na)J,(nB) —J,(na)Y,(nB)=0.  . ‘ . (OiiE 
For the nodes and ventral points 
1- al a Sealy: 
1- yXp/Q Sie = dA bcs . 
