38 Report of the Board of Shell Fish Commissioners. 
locality is noticeable, due to the tide. When the tide is low 
the fresh water brought down from the head waters increases 
the proportion of fresh water in the total volume and lowers 
the density. 
( June 2nd..... 1.003 1.0052 
eee Tee eet ers roa te Ree - July 8th.....1.0052 1.0062 
| Sept. —.....1.0088 1.0106 
roo, Tela: oi Scop. ve ie's ole Sea a ore ad Aug. 14th... .1.004 1.0054 
Bails Green 37.665) z. onan 2k < jas Maden aes Sea Sept. 2nd... .1.0046 1.0058 
; ( Aug. 24th....1.0031 1.0044 
Benedict stoic Waa aia no eta Wile awe tertile ae as areca: 4.0686 e 1 Sept. 2nd ....1.0036 1.0058 
Mouth of the River 
The observations on the velocity with which the water flows 
over the oyster bars at certain stages of the tide are too few 
to be very satisfactory but some of them are given, since, to 
those familiar with the quantity and quality of oysters pro- 
duced on the natural oyster bars over which the observations 
were made, they indicate the rate of flow to be desired over 
barren bottoms to be leased. In every case the maximum 
velocity observed is given and in nearly every case the point 
at which the observation was made is located at a consider- 
able distance from shore. Of all the natural conditions 
directly affecting the productiveness of oyster grounds the 
rate of flow of water over them is the least constant and most 
difficult to caleulate. It is influenced by the shape of the 
neighboring shore line, contour of the bottom, depth of water 
and by the velocity and direction of the winds. The impor 
tance of a knowledge of this factor to an oyster grower is 
readily seen when it-is femembered that the oyster depends 
solely upon the water to bring it its food. The greater the 
quantity of water which flows over a given bottom the greater 
the quantity of oysters which may properly be planted 
upon it. 
Oyster Bar. Rate of flow observed over it. 
WOE. yo detue ifn abe stains bret 2.25 4" AT mile per hour. 
South East Middleground......... re Malic es 
Marte Gate 2. . fp imcduce ws POW SMP Ad 
Broome: Wado. eek Sega «'s Xe Ae ae ed 
SUMS PRE Ts ti Set alec falteeay «Hs Oe AE. tt 8 
Lighowing Polat. sc s0it. 34.5 Sdwiotilacs« j Ne: TAC 1 Se a 
A very few of the specimens of water collected from the 
oyster bars have thus far been examined with reference te 
