Several previous monographic papers have already been presented by me in Nov. 1940 and in Jan. 1941, dealing with a theory of the identical progress between the development of the atoms and the growth of the earth, and in accordance with this theory dealing also with the differentiation and the solidification of the magma, which has been newly defined.
In this article I repeat again the same subject concerning the magma above mentioned.

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In a previous paper (part I), the authors described theoretical curves of apparent resistivities for a case of a good conductor standing in a vertical position in a homogeneous medium. They also pointed out the relationship between the “kicks” on the curves and the boundary of the conductor.
In this paper (part II), the authors, describe theoretical formulas, calculations, and curves resulting from a dipping conductor in a position similar to part I. In this paper the theory of conformal representation is used, that is, w=zⁿ. In the theoretical condsiderations of the theory of conformal representation, line electrodes were used. At first it was thought that there would be a large difference betweenthe theoretical and the laboratory curves, but by comparison between theoretical and laboratory curves for simple cases, the authors found practically no difference in the laboratory curves using point electrodes and the theoretical curves using line electrodes.
From these experiments on dipping conductors, the authors have discovered the following facts:
1. The curves tend to become unsymmetrical. The kicks on the footwall side tend to decrease while the kicks on the hanging wall side are emphasized, changing the 3V curve to the 2V shape and the W curve to a unsymmetrical W shape.
2. In the case of the W curve, the middle peak tends to move towards the hanging wall side. The amount of movement depending upon the angle of dip.
These theoretical results have checked the experimental studies which have been published already by the senior author of this paper.

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For the concentration of the Anshan low-grade iron ore, the flotation agents being desired to obtain from the raw materials produced in Manchoukuo, the low temperature tar and the soja bean fatty acid were both ascertained to answer most for this purpose.
Their experimental data are summarized as follows:
(1) The constituent of the low temperature tar produced by distillation between 210°C and 270°C.is the mixture of 34.5% tar acid, 3.5% tar base and 62.0% neutral tar oil, and among them the tar acid is probably most effective.
(2) The soja bean fatty acid which shows a strong collecting power is the mixture of 22-25% oleic acid, 60-65% linolic acid, 10-45% stearic acid and palmitic acid, 2-3% linolenic acid and other fatty acids. The sulphur-treated one is also effective.
(3) The experimental data by the soja bean fatty acid are as follows:
(i) The recovery of the flotation operation is 83%(concentrate 60% Fe, tailing 13% Fe) after 12 minutes, and after 15 minutes it is 90%(concentrate 58% Fe, tailing 9% Fe).
(ii) The exceedingly reduced speed of the impeller, say 200 m./min., is needed as in the case of the low temperature tar.
(iii) The soja bean fatty acid and the low temperature tar are both badly affected by over-grinding, and especially the latter; and the former is partly remedied by soda ash.
(iv) Among several sodium salts, caustic soda and sodium oleate are almost as effective as soda ash, and other salts have no good effect on the iron mineral.

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Lead ore generally contains ZnS, a small quantity of which produces no noticeable in the “Precipitation Process, ”while its excessive quantity has a very serious effect upon the extraction of Pb.
This is because the melting point of ZnS is so high that the matte becomes deficient in its fluidity, and thus the metallic Pb, which has just been reduced, is prevented from settling, and because ZnS begins distilating at 1000°C and the distillation becomes quite active at 1300°C, causing on the other hand, _ the active distilation of Pb as well.
Melted, together with Fe in proper quantity, at 1300°C for more than 15minutes, ZnS is reduced and Zn evaporates, and thus the fluidity of the matte is little effected, but this is against the principle that we should prefer the low ternp: rature running, while it facilitates the distillation of Pb and brings down its extraction none the less.
Therefore, in dressing the ore, we should try to minimize the quantity of ZnS: it must not run over 5%.

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