NO. 10 WATER TRANSPARENCY — WILLIAMS, JOHNSON, DYER 15 



62° 61 



W 



m> 



Of 



St 1 m 



+**? 



^""WSSflJ?* 8 



i 



v \ 1 1 n ii . ii n 1 1 1 1 11 1.1 1 11 1 II I.I I I T 1 1 j i 1 1 1 1 1 f 1 1 1 f .1,11 1 1 : 1 1 11 1 1 1 1 nil 1 , 1 n 1 1 , n 1 i n 1 1 1 1 1 k 



47° 



Cl° 



or 



60° 59° 



Fig. 2. 



S8 a 



57^ 



