1871, Richard Soule, A Dictionary of English Synonymes and Synonymous or Parallel Expressions: Designed as a Practical Guide to Aptness and Variety of Phraseology, Boston: Little, Brown, and Company, page 406/1s.v. “Test, n.”:
1876, Robert Manning (translator), commision for the Assainissement de la Seine: Épuration et Utilisation des Eaux d’Égout (authors), Purification of the Seine: Report of the Commission appointed to propose Measures for remedying the Pollution of the Seine in the vicinity of Paris, London: E. & F.N. Spon, New York: 446 Broome Street, page 25:
By the advice of M. Le Chatelier, Inspector-General of Mines, the City authorities have made prolonged and numerous experiments on sulphate of alumina, which seemed to present greater practical advantages for the purification of sewage water than quicklime and other reägents already known in France and England.
Dr. Frankland (employed by the British Government to make a general Report on the pollution of rivers) having submitted to analysis different reägents tried or proposed, has found that on an average they extract from sewage water only 37 per cent. of the organic nitrogen contained in it, leaving 63 per cent. thereof in the clarified water.
The Finns, whose Scandinavian offshoot has been almost absorbed in Sweden, are being forcibly dissolved in the Muscovite dominion by powerful reägents, by Russian schoolmasters, a Russian priesthood, Russian military service.
