Antiquæ linguæ Britannicæ thesaurus. A Welsh and English dictionary, wherein the Welsh words are often exemplified by select quotations from celebrated ancient authors; and many of them etymologized, and compared with the Oriental and other languages ... adorned with many valuable British antiquities, to elucidate the meaning of obscure words. To which are annexed, a Welsh and English botanology, and a large collection of Welsh proverbs. And to the whole is prefixed, a compendious Welsh grammar, with the rules in English; also, to which are added, The rules of Welsh poetry