Report of the Board of Shell Fish Commissioners. 59 
This stony material is not limited to the bottoms in shal- 
low water but is abundant on much of the bottom far from 
shore. It was taken with the tongs at nearly half of the 
stations at which examinations were made on the off shore 
or deep water portion of the oyster grounds and it occurred 
as frequently in connection with soft muddy bottoms as with 
hard sand, an indication that it has been distributed over the 
bottom by the action of currents and waves from the shore 
and from the outcrops of stone beneath the Bay. 
The off shore parts of the bars usually terminate in soft 
muddy bottoms, and patches of similar bottom, although more 
‘sticky and buoyant, are found here and there, especially on 
Cedar Point Hollow, Shaving Pile and Butler bars. 
The maximum range of the tide at Point Lookout Light- 
house wharf, from September 14th to October 6th, was 2.8 
feet; the mean range, 1.3 feet. 
The maximum rate at which currents were observed to flow 
was: 
.74 mile per hour over Chinese Muds bar; 
.97 mile per hour over Cedar Point Hollow bar, and 
.61 mile per hour over Lookout bar. 
The maximum and minimum densities of the water ob- 
served during the period oceupied by the survey are as 
follows: 
Oyster Bar. Date. Densities. 
Cedar Point Hollow............. Sept: 22.5.2. 4% 1.0088—1.0106 
TROCHEY | HOME 50 ire ps! Nps iepertin's eda tia ¢ Sa aes at ay ie 1.009 —1.0104 
An tT a ere ante cree Phe a ee TY. ice cine, 1.0086—1.0098 
PROB SS. Se wre BN We os oes She Bae § 1.0088—1.0104 
Wink *' Hawks Depts oi..-c0 ced a sarees SF oh phan ae 1.0082—1.0095 
Siti PuE } cic e ce cet ake parele! i, Fae | Sa 1.0108 
Ao ee ey oe IY ne eu og in FR 1.0104 
BOGS y's edl)-L gare te, 9,0 5 bakes hehe ff Bn come 1.0105 
EO RMON Reese ate iC bce oS. cio Pita ines 8 by Bradt lt 1.0095—1.0102 
