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all cases of Plague which have so far occurred throughout the Colony (including Port Elizabeth). This has amounted--

among Europeans to 34.1 per cent. on a total of two hundred and

fourteen cases ;

among Aboriginal Natives to 42.7 per cent. on a total of one hundred

and ninety-two cases; and

among Coloured persons, chiefly consisting of half-castes and Malays, to

56.7 per cent. on a total of four hundred and thirty-six cases.

(6.) So far, therefore, as we can judge from the above figures both the inci- dence of the disease and the mortality, when attacked, is greater among Chinese than among other races.

(7.) It is impracticable to say how far these results have been influenced by inoculation with "Haffkine's Prophylactic," as, apart from the fact that our re- cords do not in every case state the race of the person inoculated, there are so many sources of fallacy in the application of inoculation figures that no reliable deduction can be made. Moreover the number of persons inoculated is so small compared with the size of the communities living in infected areas that, I think, under any circumstances but little effect can be attributed to the inoculation on the course of the epidemic as a whole. Perhaps an exception to this statement may be made in regard to the inoculation of the large body of Natives (between six and seven thousand) who were removed from Cape Town at the beginning of the outbreak and placed in a new Location at Uitvlugt in the vicinity of the city.

•

The total of inoculations to date, a large number of which, however, have been performed on Natives and Asiatics living in uninfected portions of the Colony, amount to twenty-nine thousand seven hundred and eighty-one, of whom six thousand three hundred and fifty-five were Europeans, and twenty-three thousand four hundred and twenty-six were Coloured, Asiatics, and Aboriginal Natives.

(Signed) A. JOHN GREGORY,

Medical Officer of Health for the Colony

and Director of Plague Administration.