Example 31. Picforth In Nomine notated with proportions, mm. 1–9. Part 3 is notated in the “standard” mensuration. Part 4 moves twice as slow in . Part 1 moves twice as fast in (redundantly marked 2:1 as Baldwin usually does though placed vertically on the staff as Morley places his proportions). Part 5 is notated in which indicates perfect (ternary) semibreves. Part 2 I’ve notated in as a diminution of part 5 as well as adding the redundant 4:3. Baldwin uses at least eight different notational conventions to indicate sesquitertia proportions in the proportion pieces of his commonplace book of which is one of the more common.