To work the lift, pressure-water is admitted to the annular space C above the lower of the two balance pistons (the space B above the upper one is always in communication with the pressure-water), and the combined pressure on the two pistons is sufficient to lift the cage, ram and load.
Behind them the Spaniards, who had an establishment at Asuncion, had penetrated almost to the sources of the waters of Paraguay, and had succeeded in establishing communication with Peru.
Ostend is in direct railway communication with Brussels, Cologne and Berlin.
In 1903 Count Billow declared in the Reichstag that the government was endeavouring to pursue a middle course between the extravagant aspirations of the Pan-Germans and the parochial policy of the Social Democrats, which forgets that in a struggle for life and death Germanys means of communication might be cut off.
Inland communication between them is due to the slight elevation of the intervening country above their ordinary levels and to the enormous volume of water brought down by the Amazon, especially in the flood season.
The proximity of the mountain range to the seashore causes the rivers of the west coast, with the single exception of the Padas, to be rapid, boulder-obstructed, shallow streams of little value as means of communication for a distance of more than half a dozen miles from their mouths.
Through its excellent water communication it affords an outlet for the agricultural produce of the district, and forms an entrepot of trade between Bordeaux and Toulouse.
Syria happens to lie on the line of least resistance for communication between the early subtropic seats of civilization in the Nile and Euphrates valleys and the civilizations of Europe.
It is true that the Indian government interferes as little with the internal jurisdiction of the tribal chiefs amongst the Pathans of the Suliman Range as it does with that of the northern chiefs; but the occupation of a line of posts on the Zhob river, which flanks that range almost from end to end on the west, places the doors of communication with Afghanistan in British hands, and gives command of their hills.
After awhile the need of some means of communication became so urgent that these outbursts occurred daily, sometimes hourly.