The High Caul Cap is both the name of a traditional Irish air and a symbol for the link remaining after birth between mother and child. The caul was superstitiously regarded as a good omen and so kept at the hearth as a preservative against drowning. This symbolic gesture helps us to fathom the watery imagery in this volume, which traces the decline and death of the poet's mother. Medbh McGuckian's writing is always profoundly sensual, but now, with the maternal body at stake in its meditations, the physical takes on supernatural powers. Poetry relies on the senses for proof, much as the doubter relies on touch to be convinced of the miraculous. Mother-daughter relationships move down the generations ("I discover a photograph / of my beautiful sculpted daughter" from "Corner of Field with Farm") trying to establish the exact nature of their love. As in many of McGuckian's books, blue is a sacred color (of the Madonna, the sea, the sky) and saints and angels appear throughout the volume as though to remind us of how the masters used such icons to transform their myths into art. McGuckian uses these icons to grieve for, interrogate, and transform into poetry her late mother's "tangible gaze."