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The specific gravity at the upper mouth is 1.0194; 1% miles above the lower mouth, 1.0197. 

 Total area of the creek is 608 acres. Total area of natural oyster beds, 25.5 acres. 



Duplin River is the first tributary to Doboy Sound on the northward side, into which it 

 empties lyi mile to the westward of Sapelo Light-house. It is a small stream averaging about 

 150 yards in width, and extends some 5 miles to the northward in the marshes of Sapelo 

 Island. The depth of water for nearly all of the river ranges between 6 and 20 feet. The 

 prevailing character of the bottom is soft mud, with here and there patches of a small area of 

 sticky bottom on which are a few scattered oysters extending to the edge of the mouth. 



At low water the specific gravity at the head is 1.0187; at the mouth, 1.0191. The total 

 area of the river is 355 acres. Area of natural oyster beds is 22 acres. 



Doboy Sound separates Sapelo Island on the north from Wolf Island on the south. Extending 

 in a northwesterly direction it is about 5 miles long, and averages about three-fourths of a 

 mile in width. About two-thirds of the area of this sound has a depth of water ranging from 

 20 to 40 feet. A large volume of salt water enters and renders almost the entire area unsuita- 

 ble for oyster culture. Along the shores are strips of oysters and dead shells. 



Several hauls with a steam dredge were made in this sound between the mouth of Connegan 

 River and Sapelo Light-house, and quite a number of star-fish were brought up in the dredge, 

 which fact would of itself render the attempt to cultivate oysters here a useless undertaking. 



Connegan River is a tributary of Doboy Sound. It extends through marshes to the sotith- 

 ward about 3 mile.s, and joins North River by a small branch, thus receiving indirectly a 

 portion of the fresh water from the Darien River. It is about one-fourth of a mile in width, 

 and the depth ranges from 6 to 16 feet. The bottom is variable, but generally hard, and suitable 

 for oyster culture. 



The specific gravity 1% miles above the mouth is 1.0164. The total area of the river is 616 

 acres. The area of natural oyster beds is 14 acres. 



North River enters Doboy Sound on the north side of Doboy Island. It extends through 

 marshes in a westerly direction for about 5 miles, where it joins a small creek connecting with 

 the Darien River, by means of which it receives a small quantity of fresh water. It averages 

 about one-fourth of a mile in width, and has a depth ranging between 8 and 20 feet. The 

 character of the bottom is mud, about one-third of it being sufficiently hard or sticky to be 

 utilized. 



The specific gravity at the mouth, 1.0180; 1 mile above the mouth, 1.0171. The total area is 

 528 acres. Area of natural oyster beds is 7 acres. 



Back River enters Doboy Sound on the south side of Commodore Island. It is about one- 

 fourth of a mile in width, and bends northward and westward and thence southward, where it 

 is joined by the mouth of Darien River. It is about 3 miles long, and runs entirely through 

 marshes. The depth of water ranges from 8 to 20 feet. The character of the bottom is hard, 

 being both hard mud and mud and sand, and is well adapted for the cultivation of oysters. 



The specific gravity at the mouth is 1.0189; at the head it is 1.0171. At the village of Doboy 

 the mean specific gravity, from thirty-five observations, was 1.0174; the maximum being 

 1. 0212, the minimum, 1.0109. The total area of the river is 540 acres. The area of natural 

 oyster beds is 28.5 acres. The maximum current observed at Doboy was 1.7 knots per hour. 



Rockdedundy River is really one of the deltas of the Darien River. It is about one-fourth 

 of a mile in width, runs entirely through marshes, and has a length of about 2 miles. 

 There are several shoal spots in this river of less than 6 feet, and only about one-half of the 

 area has a depth of more than 6 feet, and in that area the bottom is very uneven, ranging 

 from 6 to 30 feet in depth. 



At the mouth of this river there is an important natural oyster bed, covering about 5 

 acres. Samples of oysters taken here show the conditions favorable for a rapid growth. The 

 oysters were not large, however, which is due to excessive fishing, and indicates that the bed 

 is being fast depleted. The character of the bottom is favorable for the cultivation of 

 oysters, except in the shoal places. 



