Historical & Comparative

The pronunciation of Greek; accent and quantity. A philological inquiry

Scandinavian influence on Southern Lowland Scotch

Orthography

International Language, Past, Present & Future

In the path of the alphabet an historical account of the ancient beginnings and evolution of the modern alphabet

On the Study of Words

The Comic English Grammar: A New And Facetious Introduction To The English Tongue

Division of Words

Geographical etymology: a dictionary of place-names giving their derivations

An essay on the origin of language

A Concise Introduction to Syntactic Theory

Palæography

Romano Lavo-Lil: Word Book of the Romany; Or, English Gypsy Language

American Languages, and Why We Should Study Them

The International Auxiliary Language Esperanto: Grammar & Commentary

Vocabulum; or The Rogue's Lexicon

Account of the Romansh Language

English spelling and spelling reform

The English Language

The Position of the Slavonic Languages at the present day