From Tyumen the road proceeds to Omsk, Tomsk, Krasnoyarsk and Irkutsk, sending off from Kolyvan a branch south to Barnaul in the Altai and to Turkestan.
Communications are monopolized by the Great Northern railway company, whose main line from Belfast divides at Portadown, sending off lines to Omagh, to Clones and to Dublin.
The differentiation of queen and workers is correlated with the habit of storing food supplies, and the consequent permanence of the community, which finds relief for its surplus population by sending off a swarm, consisting of a queen and a number of workers, so that the new community is already specialized both for reproduction and for labour.
It belongs chiefly to the basin of the Rhine; the Lower Rhine, which skirts its southern border, after sending off the Crooked Rhine at Wijk, becomes the Lek, and the Crooked Rhine in its turn, after sending off the Vecht at Utrecht to the Zuider Zee, becomes the Old Rhine.
From Samarkand it is continued east-north-east via Khojent to Andijan (330 m.), sending off on the way a branch to Tashkent (94 m.).
