Note 38 — I. TECHNICAL PROCESSES IN THE MAKING OF MODERN POTTERY AND THEIR APPLICATION TO THE TECHNIQUE OF ANCIENT VASES
Reading edition
H. B. Walters in his Ancient Pottery, I, p. 212, says that the glaze runs best on a surface already baked. As a matter of fact, to make glaze run at all on the baked surface, the biscuit has to be soaked in water.