Dr Stenhouse has proposed some of the alg as furnishing an economical source of mannite.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley
The latter article has long been used for this purpose, but not until lately has mannite been detected in the sulphate of quinine.
The Edinburgh New Philosophical Journal, Vol. XLIX|Various
Mannite and dulcose are the substances which it most nearly resembles.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley