The Optical Magic Lantern Journal (January 1895)

2 The Optical Magic Lantern Journal. and Photographic Enlarger. NOTICE. ; $ Each. Postago. Binding Cases for 12 numbers .. 1/ «. lid. Reading Cases with 12 cords at back 1/3 .. 13d. Bound Vols. for 1894 .. .. 8/.. 44d. Notes. Anour a fortnight ago, a bazaar and sale of work was held at Broad Street Baptist Chapel, Ross, Hereford, in aid of purchasing a magic lantern for the use of the Pastor in church work. Many of the ladies connected with the church furnished well-laden stalls, and during the evening a concert ee given. * * : Tae sleckic eat has now been laid on at Mr. J. H. Steward’s, 406, Strand. We recently there saw the new lantern for stereoscopic projection fitted with the Davenport electric lamp—the effect is grand. On page 202 of last issue, when speaking of the old Royal Polytechnic, we alluded to Mr.Edmund H. Wilkie as having been one of the Directors. Our attention has been directed by Mr. Wilkie to this error. Cn further investigation we find. that, although eligible for the position, Mr. Wilkie did not on any occasion serve on the: board. We gladly make the correction. ‘Invention, Mr. Horace Banks is a rising man. Last season he filled nearly a hundred engagements throughout the country, and for this season he has a great many engagements ahead for his dioramic lecture ‘ Picturesque New Zealand.” a aS ok THosE requiring castings of any kind in connection with the optical or lantern line, are directed to the fact that Messrs. Broad & Son, of Windmill Street, Tottenham Court Road, N.W., and Uxbridge Road, W., maké a special feature of this department. Size is no object with Messrs. Broad, as they cast all the way from the small portions of limelight jets, and microscopes to the huge fountain that stands in Shaftesbury Circus, W. | : # * * A MICROSCOPE made over a hundred years ago, was lately exhibited at the Liverpool Royal Institution by Mr. William Slater, who explained its parts In an interesting manner to the members. * * # Ir is not many years ago that people in the North of Scotland uttered strong objections to the use of a. modest organ in their churches; what they would say -could they rise from their graves, and witness a lantern show in the very same church that they attended is easier understood than expressed. Yet such has been the march of progress, that even in the far north we learn that it is not uncommon to have a lantern in the church on week-days. From a week-day to Sunday itself is but one step, and we doubt not that that step will become a common one in a very short time. aS a ae Tur inventor of the lantern for the projection of opaque objects, the great mathematician Euler, had a sceptical mind, and it was several years before he would believe in the manufacture of achromatic lenses by Mr. Dollond. Nevertheless, several telescopes’ made with achromatic lenses were made and put into use, and Euler ascribed their good qualities to the cleverness of Mr. Dollond -in calculating the curves of the lenses. Euler’s opinion was that different kinds of glass differ but little in their dispersive power, and it was not until 1764 that evidence reached him that by means of the introduction of lead, glass had been made with four times the ordivary dispersive power. He then withdrew the weight of his authority in opposition to Dollond’s the merit of which then became firmlyestablished. Before these events, Dollond, in 1752, had contributed a short paper to the -Royal Society, arguing that Euler was all in the wrong about the principle of a water-lens which the latter had designed.