15ed

Welsh Adjective cy adjective cy 15fed cy 116 https://books.google.co.uk/books?id=RZRWAAAAcAAJ&pg=PA116&lpg=PA116&dq=15ed+yr+yn&source=bl&ots=FQyNNj46eB&sig=ACfU3U06jZBhDtU8VAY-PZUlJHh5Liycvw&hl=en&sa=X&ved=2ahUKEwj67Z3fjJD6AhXCEsAKHc0TCnoQ6AF6BAgbEAM#v=onepage&q=15ed%20yr%20yn&f=false Rhyfeddodau natur a chelfyddyd, sef, cyfeithiadau gan mwyaf, o weithoedd y prif awduron Seisonig R. Jones Bethesda 1859 Ar y 15ed o Ebrill, yr un flwyddyn, gosododd ddau lyffant byw mewn cawg o gynrwd, yr hwn a orchuddiai â gwydr, fel y gallai sylwi arnynt yn fynych. On the 15th of April, the same year, he placed two live frogs in a bucket of soil, which he covered with glass, so that he could observe them frequently.