Match the cardinal numbers zero (none) through nine with the Mother Goose poems where they can be found. Each of the ten numbers is associated with only one of ten poems listed below. For example, the number associated with the poem "The Derby Ram" would be designated a, and so on.
The Derby Ram = a
Sing a Song of Sixpence = b
Intery, Mintery = c
Five Toes = d
The Dove and the Wren = e
The Girl and the Birds = f
Diddle Diddle Dumpling = g
Old King Cole = h
Wee Willie Winkie = i
Pease Porridge = j
Once you've sorted all that out, go find the bison tube at N 47 (i-b)(h-g).db(e+b) and W 122 (f-a)(j-g).(g+h)(a-c)(c).
Chmmyr: vtaber nal ahzoref zragvbarq va gvgyr.
Uvqr: ab arrq gb yrnir gur fgrcf, ybbx jnvfg-uvtu naq bhgfvqr