Q2 



Table I. — Dredging results — Tangier Sound. — Continued. 



Locality. 



.Johnson's Bed 



Dog Fish Bed ( 



Trevise Bed 



Shell Bed 



Flat Bed 



Muddy Marsh Bed. 

 Bird Bed 



Hern Island Bed . . . 



Parker's Bed 

 Brig Bed 



22 

 ISO 



22 

 23 



359 



59 



237; 



180 ' 



417 

 154 

 166 



0.3 

 1.2( 



1. 0< 



1.2 



1.3 



0.69 

 0.20 

 0.19 

 0.34 



248 

 12 

 46 

 61 



0.03 

 0.10 

 0. 



'.10 c 

 .20* 



0.91 

 0.75 

 0.37 

 3.62 



228 

 9 



17, .. , 

 221 > | 0. 5t 



0. 74 170 



1. 67 15 



3. 23 55 j 



0.16 36- 



0.26 

 0.99 

 0.57 



107 

 153 



0.40 

 0.20 



2.22 

 5.85 

 1.07 



238 



895 



95 



2.0 



0.2 



0.39 

 0.33 

 0.52 



91 



50 



14.2 



0.3 



13. 9 0. 97 







50.0 



1.3 ; 48.7 0.97 



188 



23.0 



1. 7 21. 3 0. 92 



178 



14.2 



3.6 



10. 6 0. 74 



120 



77.0 



7.7 



6. 9 0. 77 



120 



By referring to Tabie I it will be seen that on all the beds in Tangier Sound, from Fishing Bay 

 down to the Ureat Rock, with one exception, that of Chain Shoal, the maximum ratio is that of the 

 second class to the first. The inference is that there was a successful spatting season on all the 

 upper beds in 1876 or 1877, probably the former. 



Again, the minimum ratio, as far down the Sound as the Mud Bed, is that of the third class to 

 the second, showing that on the beds above the Mud Bed there was not a successful attachment 

 in 1878, which was the case as attested by ourselves. The remaining ratios on these beds show 

 that there has been some attachment during the present season. 



Leaving the Chain Shoal Bed for the present, the minimum ratio on all the remaining beds is 

 that of the fourth class to the third, showing that there has been but little attachment of young 

 during the season of 1879. 



The remaining ratios show that there was a partial attachment of young on the beds between 

 Turtle Egg Island Bed and the Great Bock during 1878, and a partial attachment on the remaining 

 beds north of Jane's Island during 1876 or 1877, while there was a successful spatting on those 

 lower beds during 1878, which conclusion was found to be correct by our observations during that 

 season. 



Arranging these deductions in tabular form, we have the following: 



Table showing the success of spatting in different seasons — Tangier Sound. 





Section No. 1. 



Section ~So. 2. 



Section No. 3. 



Tear. 



Upper Tangier beds down 

 to Mud Kock. 



Middle Tangier, Turtle Egg 

 Island, to Great Rock. 



Lower Tangier, below 

 Jane's Island. 



1876 or 1877 





Successful 



Moderately successful. 



1878 





Moderately successful 



Unsuccessful 



1879 



Moderately successful 



Unsuccessful. 







The Chain Shoal differs from the beds of its section, the upper, iu having its successful spat- 

 ting season iu 1878, and its moderately successful one in 1876 or 1877, while during the last season 

 there has been but a small attachment; it thus assimilates itself to Section 3. 



If Tab'e I is again referred to for the Pocomoke beds, it will be found by assembling the upper 



