The Art of projection and complete magic lantern ... - Yesterday Image

47and the slides may be placed in any lantern and always come exact, it istruly one of the greatest boons to a lanternist to find such a method athis command.Fig. 27 shows the registering adjustable platforms with stop, whichare raised and lowered either by rack and pinion or thumbscrew motionfitted to an ordinary slide stage ; the dotted lines show the stop unlockedfrom its socket, and turned down when a panorama or long slideis used.REGISTERING EFFECTS AND OTHER FRAMED SLIDES.Previously to registering effects, all the slides must be blocked inframes and fixed so as to prevent them moving or shaking about, adopt amethod and abide by it, not registering them in one way at one time,and differently the next.The following method as used by the writer will be found as good asany.— The usual wood frames or carriers used for framing slides, vary insize, according to width of the slide, and are known as one line, two lineand three line, the medium size is the most useful, and should measure4^ + 7 outside. Take photo block, hold it in the left hand, pulling outthe moveable piece with the right, if the slide fits loosely a strip of cardof the necessary thickness, should be laid in the rebate, to cause the shdeto fit tightly and prevent it shaking about in the frame, glue the strip ofcard, about 2 ^ inches long, to the bottom of the rebate or groove, nextglue all three sides of frame, strip of card included, this is easily donewith a fair size camel hair or any suitable brush, providing it is not toolarge or the glue will get over the edges of the frame, nor should the gluebe too thick. This done, take the slide in the fingers and reverse it inthe exact manner, as though it were being put into the lantern, with thepaint towards you, or in other words, with cover glass next to condenser,slide same into the rebate of the glued frame, next, glue the loose end ofthe block, top and bottom including the rebate, and press tightly intoplace, this having been done, stand to dry for three or four hours, itthen be seen that the slide is as firmly fixed in the frame as could bewished. When registering in the lantern it will then be seen why thecard strip was put in the bottom rebate, and not on the top, or notequally top and bottom, and why the loose part of the frame was put intothe wood block from the right hand. As all slides are inverted ready,all that is required is to introduce same into slide holder of the lantern,when all the level ends will come against the stop, making it much easierto work. If the loose end of the frame came against the stop, it woulditswill