23 



Living Spat 

 Number of on Inner Outer 



Shell. Surfaces. Surfaces. 



17 21 2 



18 II 8 



19 8 23 



20 7 29 



21 29 



22 6 



23 I 



2A--... 



25 



26 I I 



27 43 



28 1 2 



29 II 



30 



31 6 



32 16 I 



33 21 



34 29 29 



ZS 17 92 



36 9 5 



37 31 40 



38 



39 3 



40 3 



41 10 24 



42 6 



43 9 9 



44 14 19 



45 3 I 



46 I 7 



47 7 41 



48 31 . 20 



49 43 5 



50 4 7 



51 



52 5 6 



53 II 16 



5^ 32 I 



55----' 



56 



57 2 



58 6 



59 r 2 



60 38 38 



Dead Spat 



on inner Outer 



Surfaces. Surfaces. 



23 

 II 

 36 

 18 



3 



72> 



2 



3 

 10 



Z7 



5 



52 



2 



47 

 3 



24 

 4 



15 



4 



12 



104 



14 



4 

 28 

 14 



8 

 \ 

 I 



12 

 2 



"(> 

 6 

 2 



10 



28 

 10 



5 



5 



19 



4 

 2 



2- 



21 



