This weird little song is from an artistically designed collection of Scottish children's songs and rhymes from 1932. Nancy Rumbel the ocarina/doublereed player put me on to it.

'Boo'ers'
  
  Barnum and Bayley
  Had a canary,
  Whustled 'The Cock i' the North.'
  It whustled for hoors
  And frightened the Booers
  And they a' fell into the Forth.
     B for Booer
     K for Krudger
     J for General French.
  The Bri'ish were up at the top of the hill
  And the Booers were down in the trench.

Or

  Sister Mary had a canary
  Whustled 'The Cock o' the North.'
  It whustled for hoors & frightened the Booers,
  And won the Victoria Cross.

X:1
T:'Booers'
M:12/8
L:1/8
K:G
B2B BAG GAB e2d|B2B BAG A3 z2d|
B2B BAG GBd e2d|dgB AGA G6|
g2d e2d g2d e2d|B2B BAG A3 d2c|
B2B BAG BGd e2d|dgB AGA G6||

Notes at the end of the book:

Nicht at Eenie
the Bairns' Parnassus
with wood-engravings
BY IAIN MACNAB

Samson Press: 1932

The book was printed by J.M. Shelmerdine and F. Grierson at the Samson Press, Stuart's Hill Cottage Warlingham, Surrey, and finished in August 1932. The illustrations were printed from wood-engravings by Iain MacNab, & the tunes from line-blocks designed by J.M.Shelmerdine, who is also responsible for the composition & press-work. The type is Goudy Modern. 170 copies were printed, numbers 1 to 150 being for general sale and the rest for presentation. This is number 169.