282 SUMMARY. OF CURRENT RESEARCHES RELATING TO 



stigma of treachery applied to translators) to abstract would be to betray, 

 and we therefore give the specification in full. 



" The improved microphotoscop consists in arranging microphoto- 

 graphs in Bpectacles, eye-glasses, or hand-glasses, in concentric circular 

 groups, bo that each microphotograph may bo brought separately under 

 or before a single minute Microscope instead of each microphotograph 

 being provided with a separate Lens. 



The Microscope may be placed in a radial slide. This radial slide 

 is to enable the Microscope to be moved opposite to any circle of micro- 

 photographs ; or it may be let into the rim of the spectacle glass, and 

 provide '1 with a minute screw for focussing for varying sights. 



The microphotographs would be taken upon a piece of circular glass, 

 gelatine, or any suitable transparent substance; in photographing them 

 it would not be necessary to take each microphotograph separately. 



If the models from which the microphotographs are taken were 

 arranged in a circle, the whole circular group of microphotographs could 

 be taken on one negative. 



The gelatine film or other material npon which the microphotographs 

 are taken (and also the microphotographs themselves) may be protected 

 from injury by friction, &c, by being placed between two very thin 

 - of glass, talc, or any other suitable transparent substance, and the 

 whole cemented together with transparent cement so as to form one 

 piece. 



These circular pieces of glass or other material upon which the 

 microphotographs are taken, may be made to fit into loose frames in 

 such a manner that they may be taken out at will, and others put in 

 their places. These frames have several small catches or claws, by 

 which they may be made to spring or clip on to spectacles, eye-glasses, 

 or hand-glasses of a circular form. 



The edges of these loose frames may be milled, which when taken 

 between the thumb and finger, enables them (the loose frames) with the 

 glasses they contain to be turned round and adjusted with the utmost 

 nicety; or the spectacles, eye-glasses, or hand-glasses, may have catches 

 on their rims into which the circular glasses containing the micro- 

 photographs may themselves be sprung, or taken out at will ; thus 

 dispensing with the loose frames. In this case the glasses containing 

 the microphotographs would be a little larger than the spectacle glasses, 

 to enable the thumb and finger to take hold of them when turning them 

 round. 



This is the movement which brings each of the circularly grouped 

 microphotographs under or before the small Microscope which is fixed 

 in the rim of the spectacle glasses — on the side next the eye — in such a 

 manner that it may either be used radially or focussed for varying sights 

 by means of a minute screw. 



This circular movement is preferably obtained by the above method, 

 but may also be obtained by revolving with the thumb and finger a 

 minute rubber or other roller attached to the spectacles, eye-glasses, or 

 hand-glasses, and pressing upon the glass or other substance containing 

 the microphotographs, or upon the loose frame in which the glass or 

 other substance is fixed; or this movement may be obtained by a worm 

 fixed on the spectacles, eye-glasses, or hand-glasses, and working into 

 teeth in the loose frame ; or again the movement may be given by 

 depressing a minute spring-stud on the rim of the spectacles, eye-glasses, 



