al; ke 
a ee er kee 
Report of the Board of Shell Fish Commissioners. 41 
Observations on the rise and fall of the tide were carried 
on at Drum Point Lighthouse (situated at the extreme south- 
ern end of the section), from June 1 te August 22, 1908. The 
mean range of the tide during this period was found to be 
2.5 feet; the maximum range, 3.4 feet. 
The water flows ever the deeper parts of the oyster bars 
along the Calvert County shore at velocities of from .3 to .7 
mile per hour. The rate of flow diminishes as the shallower 
water in shore is reached except in the immediate vicinity of 
points of land. 
The table which follows gives the maximum and minimum 
densities of the water observed during the survey of the 
natural bars of the section. It will be observed that there is 
a very perceptible decrease in the density as the distance 
from the mouth of the Bay increases and also that the density 
gradually increased during the summer. Probably the mini- 
mum density attained during the spring over the upper part 
of the section is about 1.003 and the maximum during the fall 
about 1.012. 
Name of Oyster Bar. Date. Densities. 
CEO “DATES | ha oa cass: # se bse peek tat Teer | | eres 1.005 to 1.0102 
TNS SPORE =n OR As son tee JUNG! Zee eee 1.0032 to 1.0048 
ty PEE er me en ae POLY: | Pott 1.005 to 1.0062 
FRR FE ates Bas es SUR. Feet an 1.004 to 1.0056 
¥é FSU Se he knd feo, <a A Ge el radac ds 1,010 
FE ROE) cds grccew kind t Pes can > rane 1.0033. to 1.005 
Ms Dae whe aire ety (ohm ee Sept. 25...... 1.009 
In no part of the Chesapeake can natural conditions more 
favorable for oyster culture be found than prevail in this 
section, and it is believed by the Commission that were the 
restrictions removed which now hinder the development of 
oyster culture, much of the barren bottom in this section of 
the Bay would be leased and cultivated. 
