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The photographic news
- Bandzählung
- 6.1862
- Erscheinungsdatum
- 1862
- Sprache
- Englisch
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- F 135
- Vorlage
- Hochschule für Grafik und Buchkunst Leipzig
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- Hochschule für Grafik und Buchkunst Leipzig
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- http://digital.slub-dresden.de/id1780948042-18620000
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- Bandzählung
- No. 203, Juny 25, 1862
- Digitalisat
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Zeitschrift
The photographic news
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Band 6.1862
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- Register Index 619
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Band
Band 6.1862
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July 25, 1862.] 1862. THE PHOTOGRAPHIC NEWS. 353 Id's play r, anda ire are in , too, an history; Mount d e Lake d 1 calmin he series re full or re phott mend all • are no* ue in a of exce I iograpli I standing I sociatios; I views o' i haracaf I teresting 11 es: sou! , be we® may b y harm 0 ' il worthy producdd I in a ten*. I vrogallie ManJ- ge expo re entire o which r of the MA ad ca"* ortunat) iresenta nt st? ness, b2 e of but mom® ; asses wi ventt” le trih its wi tol 002 he "2 pamiop •y wet* dw2 rtu»^ nt by es "'tv moved were to I 05 r sec gasstul. Indeed, they proved more interesting, as pictures, than we had hoped originally to secure, for the tide was rushing through the unguarded portal of the Middle Level with resistless impetuosity, and as the exposure of the plate was instantaneous, all this was crisply rendered in the picture. We therefore contentedly packed up, and moved on to a spot about a quarter of a mile distant on the banks of the drain, which was now the centre of attraction for all the surrounding county. As we walked on the banks, we saw sad traces of the eager useless efforts first made to prevent the calamity. Here, heaps of chalk, thrown in to prevent the banks from falling further into the stream; a little further on, aud hundreds of sacks filled with clay, thrown in for the same purpose; but in vain. A few steps brought us to the site of St. Mary’s Bridge, and here we found a more determined stand had been made against the intrusion of the victorious waters; but made, alas! too late. Lighters had here been sunk, weighted with clay and gravel ; but the water, like an infuriated bull let loose, had tossed them up, bottom upward, and emptied and sent them spinning along quite giddy, and they in turn became unmanageable, and knocked down several bridges in their mad career. One of them lay bottom upward on the muddy shore, and close to it a lot of basket-work, made by some of the Dutchmen engaged in shutting out the sea in the estuary near Lyme. This kind of defence, so successfully employed in Holland, was quite useless here. The sea was in no mood to be cradled, and washed it indignantly away. In a few minutes, we came to a scene of the most animated description, and we saw at once that at least something was being done, that in the end promised to be successful. Hundreds of navvies were here busily employed in all kinds of labour; some filling sacks with clay, others bracing together large masses of timber, another gang was directing the efforts of a dozen pile driving engines, whilst an immense number were filling railway trucks with gravel. A tramway had been laid down on either side to facilitate operations, and it was clear that in spite of the hubbub and noise attendant upon the efforts of a thousand men, all was so admirably arranged, and there was so little of confusion, that things were pro gressing as rapidly as possible towards a successful con clusion. . At this point our progress was barred by a strange looking being, whom at a distance we had taken for a rat catcher, for he had a paper band round his hat, and also a belt of the same material. These badges informed us, however, on a nearer inspection, that he was a police assistant. He informed us we could proceed no further; but on informing him that we wished to sec the contractor, We were conducted to his office. We found in him an old friend, who was an enthusiastic photographic amateur, as Well as an accomplished musician, and with whom we had spent many pleasant hours. After the first congratulations, scarcely a moment’s breathing time was allowed, for our Unexpected arrival was most opportune, a number of pictures being particularly wanted, to show the works in various stages of progress. It is true that the tall gaunt-looking pile-engines were rather unmanageable objects in the pic ture ; but still, the ceaseless activity of the workers, and above all the furious roar of the waters against the piles, which would so soon bar their further progress, furnished Materials which, if caught instantaneously, would be in teresting to all who had witnessed the strange scene; we were, therefore, soon earnestly at work. Unfortunately, however, it had now gathered up dark overhead, and the general' aspect of the sky led us to expect a tempest. A smart shower now followed ; but as we had a plate ready, we determined to use it. It turned out to be an amusing picture, but was useless from under-exposure. All the over lookers in various parts of the works were to be seen with umbrellas over their heads. After waiting patiently until the shower was passed, we ventured another plate, which proved tolerably successful. The picture was a singular- one. The sky at the back of the picture was very dark, broken only by one or two small openings of a lighter- colour; all the busy foreground was, in consequence, thrown into very prominent relief, which appeared very strange and unusual, and the foaming water, though full of detail, appeared [of unusual whiteness. Two more pictures, and we had done all that was necessary for that day ; and as we were anxious to still go further, for the wide waste of waters had still to bo visited, we were soon packed, and were once more on our way. The prospect of a fine evening was not a bright one, for though by this time the wind had freshened into a stiff breeze, the clouds were low and heavy, and were coursing each other at a rapid rate ; but nil desperandum is pre eminently the photographer’s motto, and we determined to go to the end. Our journey lay through country the exact counterpart of that now inundated, and separated from it only by the banks of the Middle Level drain. It is a district of singular fertility, and there is something of solemn grandeur about its vast monotony, that in some measure compensates for the want of variety so abundant in hilly districts. As far as the eye can reach, the view is unbroken, and the sky line is "as straight as at sea. Field after field meets the eye, separated from its neighbour by a deep dyke filled with water. The effect is not unlike a vast chess-board ; the cultivated squares are laid out with such regularity, and at this season the alteration of colour is so marked. Now a field of wheat with its intense green, and now one of mustard or coll seed, with its brilliant yellow, shines out with dazzling brightness. The hawthorn hedge is scarcely to be seen in this part. The willow pollard may bo re garded the king of the fens, for his reign is undisputed here. V. B. Scientitic Gossip. There are few words which are capable of giving rise to more thought and abstruse enquiry than “ force.” The sub ject is one which cannot fail to be of interest to the photo graphic experimentalist, working, as he does, with tangible and ponderable effects, produced apparently without adequate material cause. The present state of our knowledge, or rather, of our ideas in respect to this subject, has been recently summarised by Professor Tyndall in a lecture before the Royal Institution, and as some attention has been excited by the ideas therein propounded, we give our readers an abstract of it. As giving a general idea of the meaning of the word force, a pound weight of lead was allowed to fall on to the floor of the theatre, from a height of sixteen feet. It required exactly a second to fall, and the instant before it touched the earth it had acquired a velocity sufficient to carry it forward at the uniform rate of thirty-two feet a second, if the attraction of the earth could have been annihilated at that instant. If the pound weight had then to be thrown upwards in opposition to gravity, the velocity with which it must start from the earth’s surface in order to reach a height of sixteen feet, would have to be thirty-two feet a second. If double this speed were imparted to it, it would not only rise to twice the height, but to four times the height. The mechanical effect, or, in other words, the work done by a projectile increases as the square of the velocity, and this holds good whether the weight be cast upwards in opposi tion to the resistance of gravity, or if the projectile be sent into water, mud, earth, timber, or other resisting material. When the pound weight falls to the earth from a height of sixteen feet the motion is suddenly arrested on contact with the ground, and the mechanical force changes into heat, the exact amount due to its suddenly arrested motion being sufficient to raise the temperature of it own mass three- fifths of a degree Fahrenheit. This heat increases accord ing to a remarkable law. If we double the mass which falls, other things being equal, we double the amount of heat;
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