“ The only excuse offered for such a wholesale exclusion of immigrants is, as stated by the supreme court, 'to keep down, as far as possible, the number of persons to be brought within danger of contagion or infection, and by means of this reduction to accomplish the subsidence and suppression of the disease, and the spread of the same.' In other words, the excuse amounts to this: that the admission, even of healthy persons, adds to the possibility of the contagion being communicated upon the principle of adding fuel to the flame. ”

“ The power of the several states, in the absence of legislation by Congress on the subject, to establish quarantine regulations, to prohibit the introduction into the state of persons infected with disease, or recently exposed to contagion, and to impose a reasonable charge upon vessels subjected to examination at quarantine stations, is so well settled by repeated decisions of this court as to be no longer open to doubt. ”

“ I have no doubt of the power to quarantine all vessels arriving in the Mississippi from foreign ports for a sufficient length of time to enable the health officers to determine whether there are among her passengers any persons afflicted with a contagious disease. ”