Besides the numerous oyster-beds in shallow waters, there are deep-sea beds both off the English and Irish coasts.  Upwards of three hundred vessels, each of about twenty-five tons, and carrying six men, hail from Colchester, Rochester, and Jersey, engaged specially on these deep-sea beds.  One is ten or twelve miles off Great Grimsby, and others exist in the English Channel.  Most of the owners of the beds of the shallow estuaries have a large capital invested.  One company alone spends three hundred pounds a month in wages, besides rent and other expenses, and six hundred a year in watching against poachers.  It sends fourteen hundred bushels to a single dealer in London, seven thousand to Kent, and ten thousand to Ostend and Dunkirk.