The superiority of animals to plants and metals in the possession of special organs of sense is connected with the greater complexity and heterogeneity of their structure.
Lord Rayleigh has pointed out that the difference may arise from the heterogeneity of alloys.
" In the same way, a theory that some particular substance, say water, is homogeneous and continuous may be a good working theory up to a certain point, but may fail when we come to deal with quantities so minute or so attenuated that their heterogeneity of structure comes into prominence.
Whether this heterogeneity of structure is or is not consistent with homogeneity and continuity of substance is another question.
In the regions of greatest linguistic mixture is the greatest heterogeneity of cephalic index.
How would you define heterogeneity? Add your definition here.