The aerial currents - cyclones, anti-cyclones and dry S.E.
The Atlantic cyclones penetrate to the Russian plains, mitigating to some extent the cold of winter, and in summer bringing with them their moist winds and thunderstorms. Their influence is chiefly felt in W.
The laws and relations of the cyclones and anti-cyclones in Russia are not yet thoroughly understood.
It appears, however, that in January the cyclones mostly travel across N.W.
In July they are pushed farther towards the N., and cross the Gulf of Bothnia, while another series of cyclones sweep across middle Russia, between 50° and 55° N.
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