Chart VI.— Showing the specific gravity of the sea-water at the VVickford Laboratory of the Rhode 

 Island Commission of Inland Fisheries from March 27 to May 20, 1905. 



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Chart Vll.-Showing the Bpecifio gravity of the sea-water at the Wickford Laboratory of the Rhode 

 Island Commission of Inland Ftaheries from June 18 to August 8, 1905. 



