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A new model for the dielectric constant of a mixture of two or more liquids has been developed by considering a r;circratized approach towards modelling. A new property of liquid mixtures which is noninteractive and distributivc, has been defined. The Taylor expansion of this new property and subsequent use of the Fade approximant has generated the parametric expression lot-the new property which has been used to develop a dielectric mixture model. In order to substantiate the model the measurement of complex permittivity of a condensed milk and water mixture at different concentrations and frequencies between 0.6 to 3 GHz has been carried out. Electrical conductivity of a condensed milk and water mixture has also been measured at different concentrations. The model has been compared with the experimental data of the present investigation and some published data. The agreement between the theoretical results and experimental values is good. The generalized mixture model developed in this paper is shown to work-better than some available alternatives.

Hybridisation has been used to develop new strains of pure culture wine yeasts. Their performance under conditions of microvinification was monitored by fermenting two different grape juices. Four of such hybrid strains produced wines comparable to those obtained by proven strains. Different fermentation performances in different grape juices suggest that strains can be hybridised to suit specific juices. When undertaking a hybridisation programme as wide a range as possible of wine-making parameters should be evaluated.

Presents a letter to the editor concerning a swing seat in the garden.