jm 



220 



im 



im 



160 

 MO 

 120 

 100 

 10 

 „60 



i 



I 

 mm 



































— 



Plate 10 



Globosity of Shell 



(SM/ Index) 

 POWELL RIVER 

















t 











— 











1 



\/ 



\ 











4 



_4 



1 



A 



^ 







Or 



Or 



Or 



GRoyPs 1-5 











5 



1 



1 





ii 





N 



\ 





















It 







\^ 





Group S. ^.^^^^ 









/ 



1 * 



1 



^7 



r\ 



* 





\ \ 





















// 







h 



' 



\ 





\ ', 



















t 



/ 



/ 







1 





IK 





\ 



\, 

















i 



i 

 i 



/ 





/ 



1 





I 



K 



\ ' 



k \ 



\ 















f / 





/ 



/ . 











\ 



\ 



\^ 

















/ 





/ 



;/ 









> 



\ 



. \ 



J^ 













\, 



I 



f 







3 













\ 



•x 



"■'» 



\ 



V 



5 





, 



.6 



.63 .65 .6 

 !)E0REC0fGl08O3|T 



7 .60 .71 .7 

 Y IN Per Cent. 



3 .75 .77 .79 .81 



.S3 .83 .87 .89 .91 .93 .95 



Platt 



Globosity of Shell 



(Shell Index) 

 CLINCH RIVER 



_ 65 «s .67 .eg 

 -tE!«0LGLQaosiTy \h Pek CtNT 



75 .75 .77 .79 .6i .9! .«5 ■«' 



