noon
The firing was complete , though the vessels were not yet cool . A few were cracked , slightly , despite the care that Grenville had exercised , and one was hopelessly ruined . However , he felt the product as a whole was surprisingly satisfactory , especially some of his molds and the crucibles meant for his foundry . `` At noon we 'll fill a jug with water , '' he said , `` and you 'll find it will keep surprisingly cool . The clay is slightly porous . The water oozes through , evaporates on the surface , and thereby chills the contents . They use nothing else in Egypt , and , I think , in Mexico .