Edisto River . --Samples were collected from 

 only one location in the Edisto River (table 11). 

 The differences in the counts between years 

 were not significant (table 14). 



Ogeechee River . --Since samples were ob- 

 tained in different years from the two locations 

 in the Ogeechee River, each location was 

 analyzed separately in testing for differences 

 in meristic counts between years, and no 

 comparisons were made between locations 

 (table 12). The differences in the counts be- 

 tween years were not significant (table 14). 



Table 11. —Frequencies of meristic counts from juvenile American shad 

 in samples from Che Edisco River, S. C. 



Table 12. — Frequencies of meristic counts from juvenile American 

 shad in samples from the Ogeechee River, Ga. 



Location 



Tear 



Number of 



sectoral fin ravs 



Mean 



Standard 





12 13 14 15 16 17 18 19 



deviation 



:t: ; : Lan-i-r 

 Do. 

 Do. 

 Do. 



1938 

 1939 

 1957 

 1958 



1938 

 1939 

 1957 

 1958 



1938 

 1939 

 1957 

 1958 



1938 

 1939 

 1957 

 1958 



Frequency 



6 28 16 - 

 4 27 18 1 

 1 31 17 1 

 1 35 13 1 



16.20 

 16.32 

 16.36 

 16.28 



18.58 

 18.48 

 18.54 

 18.64 



20.86 

 20.74 

 20.60 

 20.74 



36.54 

 36.50 

 36.36 

 36.34 



0.6389 

 0. 6528 

 0.5628 

 0.5360 





Number of 

 dorsal fin ravs 







". :■: :: := :•...:::: 





Crosby Landing 

 Do. 

 Do. 

 Do. 



Fxequencv 



2 20 25 3 

 2 24 22 2 

 1 23 24 2 

 - 20 28 2 



0.6728 

 0. 6465 

 0.6131 

 0.5628 





Number of 

 anal fin rays 







18 19 20 21 22 23 24 25 





Crosby Landing 

 Do. 

 Do. 

 Do. 



Frequency 



2 15 22 10 1 

 2 20 17 11 - 



2 23 18 7 - 



3 15 24 8 - 



0.8574 

 0.8526 

 0.7825 

 0.8033 





Number of scutes 







33 34 35 36 37 38 39 40 





Crosby Landing 

 Do. 

 Do. 

 Do. 



Frequency 



1 3 22 17 6 1 



- 4 24 17 3 2 



- 7 24 15 2 2 

 1 7 20 18 4 - 



0. 9304 

 0. 8864 

 0. 9205 

 0. 8947 







Number of 







Location 



Year 



pectoral fin ravs 



Mean 



Standard 





12 13 14 15 16 17 18 19 



deviation 







Frequency 







Kings Ferry 



1938 



5 36 9 - 



16.30 



0.6145 



Do. 



1939 



3 30 16 1 



16.07 



0. 5284 



State Park 



1957 



1 39 10 1 



16.18 



0.4375 



Do. 



1958 



- 34 15 1 



16.34 



0.5194 





Number of 









dorsal fin rays 









15 16 17 18 19 20 21 22 







Frequency 





Kings Ferry 



1938 



13 34 3 - 



18.86 



0.6704 



Do. 



1939 



15 27 8 - 



19.00 



0. 5345 



State Park 



1957 



13 32 4 1 



18.86 



0.6392 



Do. 



1958 



13 30 6 1 



18.90 



0.6776 





Number of 









anal fin rays 









18 19 20 21 22 23 24 25 







Frequency 





Kings Ferry 



1938 



2 13 21 11 3 



21.00 



0.9476 



Do. 



1939 



2 8 26 11 3 



21.10 



0.8864 



State Park 



1957 



3 8 21 16 2 



21.12 



0.9398 



Do. 



1958 



1 11 23 7 8 



21.20 



1. 0302 







Number of scutes 









33 34 35 36 37 38 39 40 







Frequency 





Kings Ferry 



1938 



2 2 24 17 5 - 



36.64 



1. 1205 



Do. 



1939 



- 9 13 18 7 3 



36.43 



1.0529 



State Park 



1957 



- 9 17 18 6 - 



36.42 



0.9278 



Do. 



1958 



- 6 19 17 8 - 



36.54 



0. 9082 



St. Johns River . --Based on the 1954 samples 

 from the St. Johns River (table 13), differences 

 in the meristic counts were not significant 

 between the three locations. Differences be- 

 tween years were tested for the Palatka 

 samples only and were not significant (table 14). 



Comparison between South Atlantic coast 

 rivers . --Data for all locations and all years 

 for which collections were available were com- 

 bined in testing for significant differences in 

 meristic counts between two rivers. There was 



