Scientific American Supplement, No. 623, December 10, 1887

Name: Scientific American Supplement, No. 623, December 10, 1887
Author: Various

Various

Science -- Periodicals

_Sepia Red._
    10.--Citric acid.                80 grains.
         Carbonate of soda.         135   "
         Citrate of potash.          12   "
         Oxalate of potash.           3   "

    11.--Citric acid.               108 grains.
         Carbonate of magnesia.      68   "
         Carbonate of potash.        12   "
         Oxalate of potash.           3   "

             _Sepia Yellow._
    12.--Citric acid.                40 grains.
         Carbonate of magnesia.      25   "
         Citrate of ammonia.        166   "

    13.--Citric acid.               120 grains.
         Carbonate of magnesia.      72   "
         Carbonate of ammonia.       72   "
         Chloride of sodium.          8   "

             _Blue Black._
    14.--Citric acid.               120 grains.
         Carbonate of ammonia.       70   "
         Carbonate of magnesia.      15   "

    15.--Citric acid.               120 grains.
         Carbonate of magnesia.      38   "
         Carbonate of ammonia.       44   "

    16.--Citric acid.                90 grains.
         Carbonate of magnesia.      57   "
         Citrate of potash.          54   "
         Oxlate of potash.           18   "

    17.--Citric acid.                72 grains.
         Carbonate of magnesia.      45   "
         Citrate of potash.          54   "
         Oxalate of potash.          18   "

    18.--Citric acid.                60 grains.
         Carbonate of magnesia.      38   "
         Citrate of potash.          68   "
         Oxalate of potash.          22   "

        _A more Intense Blue Black._
    19.--Citric acid.                30 grains.
         Carbonate of magnesia.      18   "
         Citrate of potash.         100   "
         Oxalate of potash.          33   "

           _A Clearer Blue._
    20.--Citrate of potash.         136 grains.
         Oxalate of potash.          44   "

In the photographic exhibition at Florence, the firm of Corvan[1]
places on view a frame containing twenty proofs produced by the
foregoing twenty formulae, in such a way that the observer can compare
the value of each tone and select that which pleases him best.--_Le
Moniteur de la Photographie, translated by British Jour. of Photo._

  [Footnote 1: Does this mean Mr. A. Cowan?--_Translator._]

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NOTE ON THE CONSTRUCTION OF A DISTILLERY CHIMNEY.


At a recent meeting of the Industrial Society of Amiens, Mr. Schmidt,
engineer of the Steam Users' Association, read a paper in which he
described the process employed in the construction of a large chimney
of peculiar character for the Rocourt distillery, at St. Quentin.

[Illustration: FIG. 1--ELEVATION.]

This chimney, which is cylindrical in form, is 140 feet in height, and
has an internal diameter of 81/2 feet from base to summit. The coal
consumed for the nine generators varies between 860 and 1,200 pounds
per hour and per 10 square feet of section.

Public-domain text, read in full here on John Shaqi.

Scientific American Supplement, No. 623, December 10, 1887

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