Marlbro.
I think the following _englyn_ or epigram on a silkworm, which is composed
entirely of vowels, will satisfy your correspondent. I have seen it in some
book, the name of which I forget. It {473} must be borne in mind that _w_
is a vowel in Welsh, and is sounded like _oo_ in _boot_.
"O'i wiw [^w]y i weu e a a'i weau
O'i wyau e weua;
E' weua ei [^w]e aia'.
A'i weau yw ieuau ia."
"I perish by my art; dig my own grave;
I spin my thread of life; my death I weave."