sesquioxide

The reason of this appears to be that a part of the manganese is first precipitated as hydrated sesquioxide, which is afterward oxidized to hydrated peroxide, for the upper portion of the liquid may sometimes be colored by chameleon, while the lower portion, which is in closer contact with the precipitate, is less colored or absolutely colorless.

Scientific American Supplement, No. 324, March 18, 1882 Various

Oxisols with sesquioxide clays also tend to be highly permeable.

5. How plants live and grow 1991

‘Harvest Scene’ in the exhibition, being from an albumen negative lent me by Mr. Ross, the well-known Edinburgh photographer, is an example, the salt of the sesquioxide of uranium being in this case the hydrofluate, and the time of exposure from the strength of the albumen negative fully an hour of good sunshine.

Photographic Reproduction Processes Peter C. Duchochois

Gmelin states that yellow prussiate of potash yields with a solution of oxalate of sesquioxide of cobalt a blue resembling Prussian blue -- that, in fact, there can be obtained a Prussian blue with a base of cobalt instead of iron.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

The red coloration disappears, a part of the iron perchloride is washed out, and in the parts which have not been acted on by light the perchloride is transformed into sesquioxide.

Photographic Reproduction Processes Peter C. Duchochois

*** “The next class of processes are dependent on the sensitiveness to light of the salts of uranic oxide or sesquioxide of uranium, U2O3.”

Photographic Reproduction Processes Peter C. Duchochois

The rare metal iridium affords a blue which is a mixture of the oxide and the sesquioxide.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

The investigation of Weppen appears to prove that the action of the charcoal extends to all metallic salts; with the following, no doubt remains of this being so, to wit: -- the sulphates of copper, zinc, chromium, and protoxide of iron; the nitrates of lead, nickel, silver, cobalt, suboxide and oxide of mercury; the protochlorides of tin and mercury; the acetates of lead and sesquioxide of iron; and the tartrate of antimony.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

The colouring matter of which is sesquioxide of iron, is used as a crayon.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

By mixing it in the same way with ammonio-oxalate of sesquioxide of iron, we get a dull green picture, changeable through intermediate stages into brown by alkaline carbonates, and that into a

Photographic Reproduction Processes Peter C. Duchochois