Containing around 3,700 dialect words from both Cornish and English,, this glossary was published in 1882 by Frederick W. P. Jago (1817–92) in an effort to describe and preserve the dialect as it too declined and it is an invaluable record of a disappearing dialect and way of life.
Oneida is an endangered language of the Iroquoian family of northeastern North America. Among its more notable structural features are: its relatively small phonemic inventory lacking in labials; its use of whispered syllables; the complexity of the verbal morphology; the dominance of verbal structures over nominal ones; and the productive use of noun incorporation. The current work is based on two and a half decades of field work in the Wisconsin community of Oneidas where there are now fewer than a couple dozen native speakers remaining. Other communities exist in Ontario and New York state where the language is similarly endangered. Despite the endangered status there is an oral literature, primarily in the rich ceremonial tradition. The community actively invests in language revitalization efforts and there is limited literacy in an orthography not more than a few decades old.