The Roman Catholic Croats predominate in Dalmatia, north-western Bosnia and Croatia-Slavonia.
White and yellow colours predominate and insects with a proboscis of medium length are the common pollinating agents, such as short-tongued bees.
Of the Aryan races the Slavs - Serbs, Bulgarians, Pomaks and Cossacks - and the Greeks predominate, the other representatives being chiefly Albanians and Kurds.
This type is found in its purest form in the north and north-west, while the mixed races and the population referred to the Australoid type predominate in the peninsula and southern India.
This is really the case, for all observations show that the Antarctic and Arctic ice-bound seas are enormously rich in diatom life when compared with temperate and tropical regions: the great Antarctic zone of sea-bottom deposit, in which the skeletons of diatoms predominate, covers some ten millions of square miles.