A steamer's hull below her load-line is pierced in places to admit water for the condensers and ballast tanks.

By this time the gold rush to the southern portion of Western Australia had set in strong, and the country that had so long repelled the pastoral pioneer by its aridity was now overrun with prospectors, their camps supplied with water by condensers at the salt lakes and pools.

a barometer sometimes applied to the condensers of steam engines? A.Yes; and it is called the vacuum gauge, because it shows the degree of perfection the vacuum has attained.

Some few years ago, a good number of steam vessels were fitted with Hall's condensers, which operated on the principle of external cold, and which consisted of a faggot of small copper tubes surrounded by water; but the use of those condensers has not been persisted in, and most of the vessels fitted with them have returned to the ordinary plan.

Some few years ago, a good number of steam vessels were fitted with Hall's condensers, which operated on the principle of external cold, and which consisted of a faggot of small copper tubes surrounded by water; but the use of those condensers has not been persisted in, and most of the vessels fitted with them have returned to the ordinary plan.

It cannot be from the chemical action of the salt water upon the iron, for the flues and other parts of the boiler beneath the water suffer very little from corrosion, and in steam vessels provided with Hall's condensers, which supply the boiler with fresh water, not much increased durability of the boiler has been experienced.

A course or two above the lintel of the door that leads to the condenser, build into the wall two parallel flat thin bars of iron equally distant from each other, and from the outside and inside of the wall, and reaching the whole breadth of the lever wall.

The cold water round the condenser will condense some of the steam contained in the eduction pipe, and its place will be supplied by some of the air from the cylinder.

When that is the case shut all the valves, and observe if the vacuum gauge shows a vacuum in the condenser; when there is a vacuum equivalent to three inches of mercury, open the injection a very little, and shut it again immediately; and if this produces any considerable vacuum, open the exhausting valve a very little way, and the injection at the same time.

It expands again to its former bulk on the return of the pump piston, and prevents the water from entering until there is such an accumulation of pressure in the condenser as forces the water into the pump, when the air being expelled by the water, causes a good vacuum to be momentarily formed in the pump when it gorges itself by taking a sudden gulp of water.

So soon, however, as the pressure falls in the condenser and some more air leaks into the pump, the former imperfect action recurs and is again redressed in the same violent manner.

Sometimes one end of the pump will alone draw and the other end will be inoperative, although it is equally open to the condenser, and this will chiefly take place at the stuffing box end, where a leakage of air is more likely to occur.

The injection water is generally admitted to the condenser by means of a slide valve, but a cock appears to be preferable, as it is more easily opened, and has not any disposition to shut of its own accord.

The steam enters the cylinder through the outer trunnions, or the trunnions adjacent to the ship's sides, and enters the condenser through the two midship trunnionsa short three ported valve being placed on the front of the cylinder to regulate the flow of steam to and from the cylinder in the proper manner.

This operation is one of the most important in the whole process; from the clarifier it is run through an animal charcoal filterer, which, by its chemical properties, purifies it; from the filterer it runs into a tank, whence it is pumped up above the condensers, i.e., tubes, about fifteen in number, laid horizontally, one above the other, and containing the steam from the vacuum pans.

But no; what Orpheus did with music, we are striving to accomplish by steam; what he effected by quietly touching his lyre, we study with the atmospheres and condensers of high and low pressure engines.

His last act was to order the destruction of the condensers of the German vessels in the harbour, for which the Germans, upon occupying the city, demanded an indemnity of twenty million francs.

The beam of light is furnished by three gas-burners, and it passes through a condenser.

The circulating pump is not available, because it has virtually no existence, a very small pump on the same shaft as the centrifugal being used merely to drain the condensers.

Prescott, surrounded by his retorts, crucibles, burettes, and condensers, received us much more graciously than I had had any reason to anticipate.

And suddenlythough in those days we were only just becoming familiar with themI knew what it wasthe engine of some sort of automobile; but not in action; the sound came from the boilers or condensers, or whatever the things were called which they used in the steam-driven cars.

Have number of condensers set up in city, which furnish good water.

First, twice or thrice the power may be obtained, with the same weight of boilers and machinery, and with considerable economy, by carrying very much higher steam, employing simple surface-condensers, and maintaining a high rate of combustion and vaporization, in accordance with the best commercial-marine practice.

As can be well imagined, the distillers in use at Suakim are on a much more colossal scale, and owing to the now almost universal use of surface condensers in ocean steamers, no great difficulty ought to attend the adaptation of the boilers and condensers of one of our transports.

As can be well imagined, the distillers in use at Suakim are on a much more colossal scale, and owing to the now almost universal use of surface condensers in ocean steamers, no great difficulty ought to attend the adaptation of the boilers and condensers of one of our transports.