Well, the joke was, I discovered finally, that A sounds like EI in Yiddish.
Horse, EIsóh-waschukka (EI very shrill, with the tongue; second word very short).
Because they be the double of Triangles, by the 12 e, of first figures: As ae, and EI.
It was much better she should have her friends, and he his—spelt wrong: EI instead of ie.
And by the same argument it shall be treble unto the quadrate or square of EI.
For EI at accusen me taken of e philosophie fEIe of so grete blame.
It becomes EI dd, his father; EI thd, her father; by nhd my father.
Contemnenda non est accurata circa Nomina Diligentia EI qui volucrit prole intelligere sacras Literas.
For example, in such words as decEIt, recEIve and cEIling, the spelling is EI.
For yif at EI myten wryen awey in oer manere an EI 4452 ben purueyed.