« PreviousContinue »
in discharging pistol bullets. These are fired, in rapid succession, from a single gun barrel against a metal target, one hundred feet distant, and they are completely flattened on it; this, however, is not equal to the effect of a horse pistol, and it is much inferior to that produced by the discharge of a musket. The rapidity of the discharge is, however, to be considered; but, if we reflect that coals, water, pipes, a generator, and furnace, are all requisite to keep up the necessary supply of steam, we shall find that as much bulk and weight are attached to a single gun barrel as would equal that of a field piece, which, in my opinion, would discharge more grape, and with infinitely greater force in a given time, than the whole of Mr. Perkins' apparatus.
The elastic force, indeed, of steam may be increased by an increased heat, and hence a greater power will be obtained; but, to effect this, there must be a proportionable increase of the size of the pipes, generator, furnące, &c. and this in a much greater degree than is usually supposed even by practical men. It is also to be kept in mind, that there is a limit to the expansibility of steam, which the nature of materials will not allow us to go beyond ; and we may presume that no practical use will ever be made of steam beyond one or two thousand pounds on the square inch. Indeed, when we reflect that, at a temperature of seven hundred degrees Fabrenheit, steam only occupies four times the space of water, wbilst, at a temperature of two hundred twelve degrees, it expands 18,000 times, we will discover another difficulty in the fact, that one quarter of the power generated would be required to force the water into the generator, which must be proportionably large to raise so much water to so high a temperature, and keep up that constant stream of it which is absolutely necessary for sustaining a continuous discharge of balls even from so small a bore as that of a gun barrel. What then will we think of an attempt to apply steam to the discharge of ordnance ? This, indeed, requires no serious attention, and it is my opinion, after a careful examination of the subject, that a twenty four pounder steam cannon, equally effective with our common guns of the same calibre never will be constructed the thing is manifestly impossible.
TO A FRIEND. We've met again,—and life is still,
The same bright, radiant, sunny thing, As when our young hearts drank their fill
From holy friendship's purest spring.
Though lovely was that summer hour,
When kneeling at her sacred shrine, We bound beneath her deep-felt power
Around our souls her wreath divine.
Though deepest in our bosoms shrin'd,
Shall be the time when first we met,
Is on our hearts, green, fadeless yet.
Though on our life's bright morning sky,
The clouds of sorrow have been seen,They pass'd and left a sweeter dye,
A deeper, more divine serene.
We've shed on pale cold brows the tear,
And clos'd the eyes we lov'd so well, But ah! the soul that made them dear
Had gone where glorious spirits dwell.
Why should the heart of man be sad ?
The air, the Ocean and the Earth Are fill'd with beings free and glad,
Rejoicing in their happy birth.
The starry sky is bright and blue,
Its smile of love on Earth bestowing, And all that meets the admiring view
With beauty, light and life is glowing.
Then let us pledge those happy hours,
And call their sweetest moments back, When first we stray'd through Learning's bowers,
And gaz'd on Science's radiant track.
Oh! then we listen’d to the lyre
Of some high bard, whose stirring strains Awoke within our breasts the fire
That kindled in his glowing veins.
BY MRS. HEMANS.
Fount of the Vale! thou art sought no more
And the sound of the breeze, it will yet be heard !
Why is it that thus we may look on thee;
Fount of the Chapel with ages' grey!
FROM "LONDON IN TRE OLDEN TIME."
THE GREENWOOD TREE.
The greenwood tree! the greenwood tree!
Then hail to thee! thrice hail to thee !
A VISIT IN CAXADA.
CHAPTER SF.COND. In the depths of the forest, a profound and solemn silence reigns, yobroken except by the murmur of waters or the rushing of winds. The flutter of the dove nestling among the thick leaves and raising her many colored neck to peep out at the passer, the whirring sound of the partridge starting in surprise from her covert, the shrill but not unmusical voices of the white winged birds sporting on the lake, or the half heard tread of the wild beast prowling around with stealthy pace, if they fall occasionally upon the car, relieve the oppressive sense of loneliness. They come as witnesses that the pulse of life has not ceased, and that all animated existence is not extinct. The feeling of solitude comes more heavily upon the soul in the silent watches of the night, than in the broad day, when the sun beams play among the branches, and the quivering shadows are thrown over the path way. Then it seems as if nature held her Sabbath of rest. The stars glide on in their silent courses in the depths of the blue sky: the moon shines coldly down.
The fires kindled in front of the green encampment of the hunter, make the darkness around seem more thick and dense ; the insects, except the busy gnat and active musqueto, have folded up their wings and retired to their little chambers to sleep. There is not even the drowsy hum of the beetle to disturb the calm solemnity of the scene. In such a situation we should almost welcome the surly bear to share with us our pillows, and rejoice in the society of a troop of wolves almost as much as in the meeting of those we hold dearest. It is a species of solitary confinement where the wide woods on either hand are the walls of the prison. The companionship of the deadliest enemy would be acceptable, and the fear of the death blow would be wholly overcome by the gratification of knowing we could receive even injury from a fellow being.
The sources of some of the magnificent Rivers which scatter fertility over the vast regions traversed by their channels are embosomed in the solitude of the Kennebec forest. In the space of a single day's march, the traveller may quench his thirst from the head streams of the noble Penobscot and the beautiful Kennebec, flowing southward through the rich territory of the Eastern section of the Union; and recline on the banks of the De Loup, which taking a