No 51 067. 



Chromoscopes and Cinematographs. 



185 



51 064. 1 : 6. 



a 



cS 



51066. 1:12. 



51067. 1:5. 



c 



I 



J3 



C5 

 < 



O 



X 



cS 



(also adulterated) and ot" Substitutes: further, pharmacognostical, pathological, tine- * (1 

 tured and injected Preparations, and Preparations of physiological Products of man. 



When sending inquiries. \\-. should he obliged for full details as to the kind of pre- 

 parations desired, and we will then get togethei special collections i<> suit. 



51.064. Projection Chromoscope (Ives's). for producing images in natural tints. Figure, 



with 3 pictures . . . 12. 0. 



Fig. 51.HI14 shows an elevation of the apparatus, and Fig. 51.I.MU A is a ground plan. The action 

 is as follows: Three diapositive images corresponding to the 3 fundamental, colours red, green and blue- 

 violet of the photographed object, are united on the screen into one image of the original colours by 

 means of light coloured to correspond. 



5l.(i65. Photographs for chromoseope Xo. 51,064. 3 diapositives on 1 plate. Price, each 0. 7. o 



List of pictures on application. 



51.066. Projection Diffraction-Chromoscope, Figure (more complete), independent appa- 

 ratus, for setting up in front of the Projection Lantern, with elegant polished mahogany 

 -land. 6 photo-plates containing grating images (Wood's), size of image about 6.5 cm, 

 are given in. (Cf. Dr. B. Donath, ,,Grundlagen der Farbenphotographie", Brunswick, 



11.10.0 



1906) . . . 



This apparatus is used for producing objectively the colour photographs obtained by diffraction 

 gratings in accordance with Wood's method. 



i >n an elegant, polished mahogany stand having iron s'iders. are arranged the necessary slits 

 and lenses together with their diaphragms, also the arrangement for introducing the photographic 

 plates (placed in stand chariots so as to be capable of to and fro motion). For rendering possible the 

 vertical adjustment of the slit visible to the right of the illustration, and of the lens, the base of the 

 column carrying this slit is fitted with a rack and pinion movement. For facilitating the adjustment 

 of the photographic plate, lenr.e.* and slits, the slit adjacent to the projection apparatus and the device 

 for introducing the plates are combined in a box having an extension. Focussing is very rapidly 

 effected. The box has large flap doors at the sides to facilitate the demonstration of the arrange- 

 ment of the apparatus / 



Wi- carry a special list, with description, of diffraction chromoscopes. which is sent free on 

 application. 



."1.066 a. The preceding, but without optical bench 10. 0. 



."> 1.067. Cinematograph, new model, reliable construction, with Objective. Figure . . . 

 This apparatus can be used in conjunction with any available projector. 



At a distance of 5 m it gives a picture 1 xl.5 m wide. The spools can be used for a length 

 of film up to 60 m. 



7.10.0 



Cl. 278 



3-L>4. 5197 



