Warington

Warington has carried out some experiments on the action of gypsum in promoting nitrification.

Manures and the principles of manuring Charles Morton Aikman

[115] According to Warington, solutions containing 50 per cent of urine become nitrifiable when sufficient gypsum is added.

Manures and the principles of manuring Charles Morton Aikman

Warington, in his Rothamsted experiments, has found that the greatest rate, working with ordinary arable soil (first 9 inches) from the

Manures and the principles of manuring Charles Morton Aikman

It was further corroborated by Warington and P.F. F.ankland.

Manures and the principles of manuring Charles Morton Aikman

The exclusion of oxygen from a soil may be effected by saturating the soil with water; and Warington has found in experiments carried out in an arable soil, by no means rich in organic matter, that complete reduction of nitrates may be effected in this way.

Manures and the principles of manuring Charles Morton Aikman

The great economic importance of this discovery, made by the F.ench chemists Schloesing and Müntz, and associated in this country with the names of Warington, Munro, and P.F. F.ankland, is only gradually being appreciated.

Manures and the principles of manuring Charles Morton Aikman

Warington showed some time ago that many species are able to reduce nitrates to nitrites, and such reduction is now known to occur very widely in nature.

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R. Warington, J.T. Schloessing, C.A. Müntz and others had proved that nitrification was promoted by some organism, when Winogradsky hit on the happy idea of isolating the organism by using gelatinous silica, and so avoiding the difficulties which Warington had shown to exist with the organism in presence of organic nitrogen, owing to its refusal to nitrify on gelatine or other nitrogenous media.

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various

Warington, _The Chemical Action of some Micro-organisms_ (London, 1888);

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various

It has been found that the process goes on much more actively in darkness; indeed Warington has found in his experiments that nitrification could be arrested by simply exposing the vessel in which it was going on to the action of sunshine.

Manures and the principles of manuring Charles Morton Aikman