47. The fourth rule of Tichonius is about species and genus. For so he calls it, intending that by species should be understood a part, by genus the whole of which that which he calls species is a part: as, for example, every single city is a part of the great society of nations: the city he calls a species, all nations constitute the genus. There is no necessity for here applying that subtilty of distinction which is in use among logicians, who discuss with great acuteness the difference between a part and a species. The rule is of course the same, if anything of the kind referred to is found in Scripture, not in regard to a single city, but in regard to a single province, or tribe, or kingdom. Not only, for example, about Jerusalem, or some of the cities of the Gentiles, such as Tyre or Babylon, are things said in Scripture whose significance oversteps the limits of the city, and which are more suitable when applied to all nations; but in regard to Judea also, and Egypt, and Assyria, or any other nation you choose to take which contains numerous cities, but still is not the whole world, but only a part of it, things are said which pass over the limits of that particular country, and apply more fitly to the whole of which this is a part; or, as our author terms it, to the genus of which this is a species. And hence these words have come to be commonly known, so that even uneducated people understand what is laid down specially, and what generally, in any given Imperial command. The same thing occurs in the case of men: things are said of Solomon, for example, the scope of which reaches far beyond him, and which are only properly understood when applied to Christ and His Church, of which Solomon is a part.