Zwingli attacked the weakest part of Luther's theory - the ubiquity of the body of Christ; and Luther attacked Zwingli's exegesis of the words of the institution.
The fact is, when wolves attack a herd, they always take the weakest animal.
By making them in longer lengths a reduction was effected in the number of joints - always the weakest part of the line; and another advance consisted in the substitution of wrought iron for cast iron, though that material did not gain wide adoption until after the patent for an improved method of rolling rails granted in 1820 to John Birkinshaw, of the Bedlington Ironworks, Durham.
The weakest passages in Der fliegende Hollander are not so helpless as the original recitatives of Venus in the first act; or Tannhauser's song, which was too far involved in the whole scheme to be ousted by the mature " New Venusberg music " with which Wagner fifteen years later got rid both of the end of the overture and what he called his " Palais-Royal " Venus.
These four groups, however, were of unequal importance, and thanks to this arrangement the English, although weakest in point of numbers, were able to exercise the same influence in the council as if they had formed a fourth of the voters.