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.
The book shows to what degree English is now the dominant language of science. It gives a world-wide overview of various countries on all continents aiming beyond description at explanation and even prediction of future developments. What are the effects of the dominance of English on languages and speakers? Are other languages still being modernized under these conditions? Are their speakers trapped at a permanent disadvantage, or do the advantages of a world-wide lingua franca outweigh disadvantages for everyone? The book provides important background information for language planning and language politics.