This section is from the book "Palmistry For All", by Cheiro. Also available from Amazon: Cheiro's Palmistry for All.
The student may also get very great help in ascertaining details about the likely marriage of the person whose hands he is examining by the following:
Fine Influence Lines seen joining the Line of Fate (7, Plate XVIII.), relate to persons who come into and affect the Destiny.
If the Line of Influence is very strong where it joins the Fate Line, and if at about the same date a clear Marriage Line is seen on the Mount of Mercury, the date of marriage may be more accurately pre-dieted by the place on the Fate Line where the Influence Line joins it.
A great wealth of detail may also be made out from observing these Influence Lines to the Destiny.
Coming over from the Mount of the Moon, there is always something romantic about the union. The person on whose hand this Line appears will as a rule meet his affinity when travelling or away from his home.
If the Influence Line has an "island" marked on it, the influence will then be a bad one, or, at least, the person will have had some scandal connected with his or her past life (8, Plate XVIII.). If the Line of Fate looks weaker or more uncertain after the union is marked, then such a marriage has not brought good or success to the subject. If, on the contrary, the Line of Fate looks better or stronger after the Influence Line has joined it, then this union will prove of advantage to the person whose hand is being examined. This increase of wealth or power is still more accentuated if at the same time it is observed that a Sua Line has made its appearance.

Plate XVIII. Marriage Lines And Influence Lines Which Further Help In Denoting Marriage.
If the Influence Line should cut through the Fate Line, and appear on the thumb side of it, the affection will seldom last as long, or be so happy (7, Plate XVIII.). If a still wider separation of the Influence Line and the Fate Line appear as these two lines ascend the hand together, the separation of interests and destiny of the two persons will be still more marked as the years proceed.
If an Influence Line approaches close to the Line of Fate, and runs parallel with it for {some time but does not join it, some great obstacle will prevent a marriage ever taking place (see also page 57).
If an Influence Line terminates in an "island," the influence itself will itself get into trouble, generally disgrace of some character (10, Plate XVIII.).1
These are fine lines that run parallel with the Line of Life (ii-ii, Plate XVIII.), but they must not be confounded with the Line of Mars, or "Sister Life Line," which commences higher up nearer the Mount of Mars.
These Venus Influence Lines are more often found with those persons who have what is called the "Venus temperament," or who are intensely emotional and passionate.
When many of such lines are seen, the subject cannot live without love, and will have many "affairs" at the same time.
As such an Influence Line runs parallel with the Life Line, or turns away from it, so it can be judged how long such an influence will last, and with fair accuracy the date when it will occur (for dates see page 113).
1 For further particulars refer back to chapter on the Line of Destiny, where these Influence Lines are also referred to (page 57).
These Influence Lines, however, never.have the same importance or meaning as those previously ascribed to the Line of Fate.
In my large work on this subject, Cheiro's Language of the Hand, I have been able to go into still greater detail with regard to all these Influence Lines.
 
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