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ess hie ire ND $.3 eg in of n- st I Vs, nd the m- ny on. rou ut not sen Dok ily, per ur- oof the is to ante ual Hie hed. the that gly; ana But hose : the 'O of y so ■h of nity- I, but ‘of it Verge siling ence, moro ydro” ireiz as y plate elens paper, bolter toss' 11 s fivo iphite d, but and uppl) riod. September 17, 1880.J THE PHOTOGRAPHIC NEWS. 445 Ue Photographic Slews, Septemher 17, 1880, government rule and regulation prohibit the pl hotographing imagined. The work is undoubtedly a valuable one, as before many years are past there will be very little of Old London left. How interesting, for instance, would have been a photograph of the old Tabard Inn, and though probably not a vestige of the tavern immortalized by PHOTOGRAPHY IN AND OUT OF THE STUDIO. Swan’s ELECTRIC Lamp—PHOTgRAPMING the BorroN of the Sea—Society for PHOTOGRAPIING Old London. Swan's Electric Lamp.—Mr. Swan, whose name has been so long and so honourably connected with photography, has been for some time busily engaged in perfecting his electric lamp. The invention—the specification of which is now published—somewhat resembles Mr. Edison’s Lane, so close to the busiest thoroughfare in London, and yet known to so few. W e believe that a good deal of the । ancient brick work remains intact, but, like most other principle ; but Mr, Swan has sought to prevent the crack ing and leakage of the glass bulb or inclosing vessel in consequence of the heating and cooling of the conducting wires, which, when simply sealed into the glass globe, cause it to crack and leak at or near the junction of the wires and glass. The means used is the employment of a pair of caps of platinum as an attachment to the lamp globe, or a tube proceeding from it at the place where the conducting wires enter the lamp enclosure. Each cap is attached by the fusion of the glass around its riin. The conducting wires pass through, or into the caps, and the junction of the wires and caps is secured air tight by soldering. Where, however, the wire does not pass through the cap, but into it, soldering is not essential, a firm con tact of the conducting wires to the interior of the caps is in this case sufficient. The second part of the invention water telescopes are used by the Norwegian and Cornish fishermen; the former employing them in their herring and cod fisheries to discover shoals of fish that would otherwise escape their nets, and the latter in looking for wrecks, lost crab and lobster pots, &c., and, when the water is clear, an observer can see from three to twenty fathoms on calm bright days. It may, we think, be taken as a has for its object the prevention of the rupture of the carbon within the exhausted glass bulb as the result of its sea. The Society for Photographing Gid London.— We are glad to find from the letter which appeared from Mr. Dixon in । our last week’s issue, that the Society for Photographing porary, “ namely, an ordinary bucket or barrel, with the bottom knocked out; secondly, a piece of tin, of a funnel shape, about three feet long and nine inches diameter at the broad (or bottom) end, and large enough to accommo date the observer’s eye; into the broad end should be in serted a plate of strong glass, and some lead to weigh it down ; thirdly, the simplest way is to get a tin or zinc tube like a map case; this should be about three and a-half feet long and three inches in diameter. The bottom of this also should be glass, and be weighted.’’ These advance in the use of the electric light has been made. witn some nope ot success. Arobabl the ‘ o dest mt or notographivg the Bottom of the Sea.—What has become | Hondon. istbebrick workof theoldkoman bathinstrand of the photographs of the bottom of the sea, said to be taken by a Scotch photographer, some time ago 'I Did any body ever see them, or had they existence only in “ the । .. . .e heat-oppressed brain” of the imaginative liner? A good earthly things, it must succumb some day to the spirit of deal of talk was expended at the time, and a host of con-1 change jectutes hazarded as to how such photographs could be 1 * produced; but as there was a remarkable reticence about prome voNI nr n .eAIve the exhibition of the pictures we are almost inclined to 1 RINTS FRoM OLD, think that the talk and the conjectures were but so much I BY T E AUTHO LooK NG waste of time. Certainly all doubts would be set at rest! No. 10.— OUR Beanfeast. if the gentleman who secured these curiosities of photo- I My print of this negative will most likely make you laugh, graphy could be induced to show them at the Photographic 1 and very probably call up some pleasant and similar recol- Society’s Exhibition next month. In the mean time the' lections. I cannot tell you anything wonderfully practical Daily News, in its desire to relieve the monotony which > about this one, simply because it is, as you may suppose, a most visitors at the seaside experience, has given a descrip-lwet collodion one; and now that we are all laying our tion of a water telescope, which we are not at all sure 1 heads and brains in the direction of dry plates—indeed,! might not be available for “sea bed’’ photography, jmay say that the latter has completely superseded the “There are three forms of water-glass,” says our con tern- former, even in-doors as well as out—1 do not think it more of these curved carbon strips are mounted within a , ? . .1: . , glass bulb by clipping their ends between forceps of plati-1 Chaucer could be traced in the budding not long since num, or an alloy of platinum and iridium attached to the pulled down, it was sufliciently antiquated to make a pic- conducting wires which passthrough or into the caps, ture of it interesting. We presume that some inscrutable The third part of the invention has for its object the pre- government rule and regulation prohibit the photographing vention of the evolution of gas given forth by the conduct- of the interior of the lower of London, as nothing seems ing wires within the lamp, and Mr. Swan accomplishes this to have been done, with this probably the most famous by coating the conducting wires within the lamp with historic building in the world There must be a whole glass or enamel. It will thus be seen that the defects mine of wealth within these old walls for the photographer, which marked the Edison lamp are here sought to be over-1 and in the days, of a rapid gelatine process, badly illumi- come, and if Mr. Swan has succeeded, a most important nated interiors, impossible with^collodion can be attempted - ... * i with some hope of success. Probably the “ oldest bit of general rule, that what is visible to the naked eye in day light may also be photographed; and by means of these instruments there really seems a possibility of taking a photograph of the bottom of the sea within a certain range. We do not imagine that cod, herring, or mullet will be conciliatory enough to sit—if this expression can be applied to fish—for their portraits, but it is quite possible that oysters, mussels, and perriwinkles, which are of a more sedate character, and not given to roaming, might be avail able. It is an undoubted fact that even in the roughest weather the agitation of the water extends but a very few feet down, and on a calm day the movement of the waves unequal contraction. Mr. Swan has found that when the must be scarcely perceptible The adaptation of a camera carbon employed within the lamp is an arch or horse-shoe- to a water telescope is a matter very easily accomplished, shaped plate, produced by cutting it out from a sheet of andwe recommend those amateurs who wish to eclipse cardboard, and afterwards carbonising it by heat, the thelatest wonder achievedin। instantaneous photography, arch or horse-shoe-shaped carbon so produced is liable to | to turn their attention to photographing the bottom of the become distorted, and ultimately to break in consequence of the unequal contraction caused by the unequal heating of the inner and outer portion of the arch during the usage of the lamp, ibis defect he remedies by forming the । Relics of Old London has been much more active than we carbon, to be made incandescent, of a strip of cardboard or parchment paper, which, after being bent into the required । form, is subjected to a white heat in a close vessel of suit able material (such as fire-clay), containing powdered charcoal or other suitable air-excludiug powder. One or