There is another sort of proportion used by Petrarche called the
Seizino, not riming as other songs do, but by chusing sixe wordes out of
which all the whole dittie is made, euery of those sixe commencing and
ending his verse by course, which restraint to make the dittie sensible
will try the makers cunning, as thus.
    --------------- )
  ( --------------- )
  ( --------------- )
  ( --------------- )
  ( --------------- )
  ( ---------------

Besides all this there is in Situation of the concords two other points, one that it go by plaine and cleere compasse not intangled:  another by enterweauing one with another by knots, or as it were by band, which is more or lesse busie and curious, all as the maker will double or redouble his rime or concords, and set his distances farre or nigh, of all which I will giue you ocular examples, as thus.

[Illustration:  two diagrams:  Concord in Plaine compasse, has four lines with 1 and 4 connected and 2 and 3 connected; Concord in Entertangle, has alternating lines connected — 1 and 3, 2 and 4, 3 and 5, etc.]

And first in a Quadreine there are but two proportions, for foure verses in this last sort coupled, are but two Disticks, and not a staffe quadreine or of foure.

[Illustration:  three diagrams of four lines each:  first, with lines 1 and 4 connected and lines 2 and 3 connected; second, with lines 1 and 3 connected and lines 2 and 4 connected; third, with lines 1 and 2 connected and lines 3 and 4 connected.]

The staffe of fiue hath seuen proportions, whereof some of them be harsher and vnpleasaunter to the eare then other some be.

[Illustration:  seven diagrams of five lines each:  first, connecting these pairs of lines — 1 with 3, 2 with 4, 3 with 5; second, connecting these pairs of lines — 1 with 4, 2 with 5, 3 with 4; third, connecting these pairs of lines — 1 with 2, 2 with 5, 3 with 4; fourth, connecting these pairs of lines — 1 with 4, 2 with 3, 4 with 5; fifth, connecting these pairs of lines — 1 with 5, 2 with 3, 3 with 4; sixth, connecting these pairs of lines — 1 with 3, 2 with 4, 4 with 5; seventh, connecting these pairs of lines — 1 with 2, 2 with 4, 3 with 5.]

The Sixaine or staffe of sixe hath ten proportions, whereof some be vsuall, some not vsuall, and not so sweet one as another.

[Illustration:  ten diagrams of six lines each:  first, connecting these lines — 1 with 6, 2 with 5, 3 with 4; second, connecting these lines — 1 with 3, 2 with 4, 5 with 6; third, connecting these lines — 1 with 3, 2 with 6, 3 with 4 and 5; fourth, connecting these lines — 1 with 4, 2 with 5, 3 with 6; fifth, connecting these lines — 1 with 6, 2 with 4, 3 with 5; sixth, connecting these lines — 1 with 6, 2 with 3, 4 with 5; seventh, connecting these lines — 1 with 5, 2 with 6, 3 with 4; eighth, connecting these lines — 1 with 2, 5 and 6, 3 with 4; ninth, connecting these lines — 1 with 3, 2 with 5, 4 with 6; tenth, connecting these lines — 1 with 2 and 4, 3 with 5 and 6.]