The South has driven to the war its whole white population able to bear arms, and when that force is exhausted, at least two-thirds of the adult males of the North and the whole black population will still remain to sustain the Government, and births and emigration will soon fill the vacuum.

George's pockets and 's brains are two things in nature which do not abhor a vacuum....

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.

That according to him Louis Bonaparte should not be combated by force of arms, but by creating a vacuum.

Throwing up the water into the air in the form of a jet to cool it, has been found detrimental; as the water is then charged with air which vitiates the vacuum.

Air, velocity of, entering a vacuum, required for combustion of coal; law of expansion of, by heat; Air pump, description of, action of; proper dimensions of.

There will consequently be a quantity of air in the pump which cannot be got rid of at all, and which will impair the vacuum as a matter of course.

When the air pump piston ascends it leaves behind it a vacuum; and the foot valve being relieved from all pressure, the weight of the water in the condenser forces it open, and the warm water flows from the condenser into the lower part of the air pump, from which its return to the condenser is prevented by the intervening valve.

or that his reproofs can take no effect, unless he will suppose a vacuum!

"Let us bring about a vacuum around him!" cried Emile de Girardin, "let us proclaim an universal strike.

Its other employments are many, and equally meritorious, and doubtless society would find a vacuum in its loss.

Care must, however, be taken not to form a vacuum in the boiler; and the gauge cocks, if opened, will prevent this.

'Tis an absurd vacuum.

Q.What expedient did you adopt to improve the vacuum in the engine to which you have referred? A.I put blocks of wood on the air pump piston, which at the end of its stroke projected between the valve plates and forced the water out.

Already there was a horrid rent where Tunnygate had floundered through at her suggestion in order to save going round the pathetic grass plot which the Appleboys had struggled to create where Nature had obviously intended a floral vacuum.

One needed but to approximate a vacuum at the upper end of the candy, and the mighty and mysterious laws of atmospheric pressure completed the benign process.

The intention of this valve is to prevent a vacuum from being formed accidentally in the boiler, which might collapse it; for if the pressure in the boiler subsides to a point materially below the pressure of the atmosphere, the valve will open and allow air to get in.

" "George is a real nice guy, Zip," said Joe, "but I still think he's breathed a little too much vacuum for his own good.

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 was written obscurely, and was not without its contradictions, but the imagination of Mrs. Abbott supplied all the vacuums, and reconciled all the contradictions.

The liquid traverses the porous sides of this under the influence of atmospheric pressure, since we cause a vacuum around the tube by means of an air-pump.

10. Q.Is this imperfection of the vacuum wholly attributable to the vapor in the condenser? A.No; it is partly attributable to the presence of a small quantity of air which enters with the water, and which would accumulate until it destroyed the vacuum altogether but for the action of the air pump, which expels it with the water, as already explained.

In descending a hill, there is a break fixed on the hind wheel to increase the friction; but independent of this, the guide has the power of lessening the force of the steam to any extent, by means of the lever to his right hand, which operates upon, what is called the throttle valve, and by which he may stop the action of the steam altogether, and effect a counter vacuum in the cylinders.