17 





1^ 



o 





0^ 





Water at ' 

 Bottom.! 



Water at 

 Surface. 





to 



00 



Air. 



o =o 



CO — . CO 

 t- Ir- t- 



o =0 



00 I— t CO 



t- t- t- 



1 1- 

  00 



Water at 

 Bottom - 



O 05 <N 

 t— to l-~ 



Water at 

 Surface. 



Air. 



Water at 

 Bottom. 



Water at 

 Surface. 



Air. 



Water at 

 Bottom - 



00 



Water at 

 Surface - 



Air. 



Water at 

 Bottom. 



O O C<1 

 J:~ i~ t- 



co 

 o ^. 



CO CO CO 

 Oi 1:- 00 



CO 



o -* 

 00 (M Tj< 

 t- i- 1^- 



00 



o == 



00 c<i T^ 



co 

 o «: 



Ttl CO lO 



o» t- 00 



00 



00 



00 ir- t^ 



00 



o "1 



uri CO o^ 



05 t- 00 



< 



00 



Water at 

 Surface. 



Air. 



Water at 

 Bottom . 



Water at 

 Surface. 



Air. 



3-(^) 



EH 



< 

 Pi 

 Eh 





'« 

 a 





o 



to 



CO 



fi^ 



3 



Cm 









Water at 

 Bottom . 



Water at 

 Surface. 



Air- 



Water at 

 Bottom. 





to 



00 



Water at 

 Surface. 



Air. 



CO 

 o «= 



^- Tti lO 

 t- t- t- 



CO 

 o «? 



00 vo to 

 i~ t- t^ 



to 



o =» 



O to iM 

 O t- OJ 



t^ CO o 



t~ t- t- 



00 TJH to 

 i~ t- i- 



00 O Tli 



O 00 05 



Water at 

 Bottom. 



Water at 

 Surface. 



Air. 



Eh 



m 



& 



00 



to 

 00 



Water at 

 Bottom - 



Water at 

 Surface. 



Air. 



Water at 

 Bottom. 



Water at 

 Surface. 



Air. 



CO 

 o «» 



CO CO t- 



oo-t- J^- 



co 

 o «? 



(N -"^ CO 

 00 t- 1:- 



CO 



o -^ 

 »* c<i m 



C5 00 05 



o 

 o » 



to e<i Tj( 

 t- J^ 1:- 



o 



o =° 



1:- CO O 

 1~ !>. i- 



O «= 



<N O OS 



1— i OS OS 



to M CO 

 b- t~. t- 



to 



o °i 



t~ CO ■^ 

 Jr- t- t^ 



CO 



Water at 

 Bottom. 



Water at 

 Surface. 



Air. 



o ■-; 



I— I I— I rH 

 r-< 00 O 



O «= 



CO CO OS 

 00 ^^- l^- 



TJH Tl( O 



00 t- 00 



o •^. 

 1— M o 



o 00 o 



^ a «* 



cS .S ID 



