Cattle sometimes congregate in cold weather around a burning coal seam and enjoy the warmth.
(solar) stars show no tendency to congregate in the galactic plane.
However, congregate towards the galactic plane.
They usually congregate in the larger towns, though in northern Moldavia there are a few purely Jewish villages, recalling those of Poland.
Many of the gulls congregate in vast numbers to breed, whether on rocky cliffs of the sea-coast or on healthy islands in inland waters.
The Italians are chiefly confined to the coast; the Germans congregate at Semlin and Warasdin; the Slovenes are settled along the north-western frontier, where they have introduced their language, and so greatly modified the local dialect; the gipsies wander from city to city, as horse-dealers, metal workers or musicians; there are numerous Moravian and Bohemian settlements; and near Mitrovica there is a colony of Albanians.
While they are in salt water they live singly or in very small companies, but during May (the twaite shad some weeks later) they congregate, and in great numbers ascend large rivers, such as the Severn (and formerly the Thames), the Seine, the Rhine, the Nile, &c., in order to deposit their spawn.
The Armenians, like the Greeks, congregate in the principal centres of trade, especially at Constantinople; their numbers were greatly reduced by the massacres of 1896.
Galata is the chief business centre of the city, the seat of banks, postoffices, steamship offices, &c. Pera is the principal residential quarter of the European communities settled in Constantinople, where the foreign embassies congregate, and the fashionable shops and hotels are found.
They are seldom found in large numbers at any great distance from the sea, and usually congregate in the principal towns and commercial centres, such as Adrianople, Constantza, Varna and Philippopolis; there are also detached colonies at Melnik, Stanimaka, Kavakly, Niegush and elsewhere.