Equilibrium between two liquids saturated with each other Antonows rule

in the case of two liquids whose surface and interfacial tensions are such that one will spread on the other, before they are mutually saturated, it is to 

If the liquids do not spread on each other when not mutually saturated, the contact angle wili be finite and the slight diminution in the spreading coefficient which takes place when the liquids are saturated with each other will result in the angle becoming larger in this case we may expect 

If (5) is combined with Dupr6 s equation (Chap. I (2)), we see that WAB = 2y i.e. the work of adhesion for two liquids mutually saturated with each other is equal to the work of cohesion of the liquid of lower surface tension, after saturation with that of higher tension. This must mean that the surface of B after saturation, becomes very similar to that of A as regards external field of force— not necessarily identical as regards molecular composition. 

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