20 



Spat Found on lOO Shells from Planting A. 



Living Spat Dead Spat 



Number of on Inner Outer on inner Outer 



Shell. Surfaces. Surfaces. Surfaces. Surfaces. 



1 43 5 27 14 



2 30 2 8 30 



3 4 2 153 19 



4 35 38 95 45 



5 10 23 121 149 



6---- 38 15 242 185 



7 17 27 33 5 



8 8 5 17 84 



9 22 I II 6 



10 8 



II 12 16 61 



12 



13 5934 



14 6 8 29 16 



15 106 50 36 16 



16 3 .. I 



17 10 . . 8 



18 15 7 19 4 



19 



20 5 



21 9 



22 2 



23 40 



24 28 



25 38 



26 2 



27 2 



28 



29 40 



30 6 



31 6 



32 14 



33 3 



34 



35 4 



36 8 



37 



38 10 



39 10 



40 



