ZOOLOGY AND BOTANY, MICROSCOPY, ETC, 



'J-: 1 . 



or hand-glasses, which acting upon teeth in the rim of the loose frame. 

 tarns it round a tooth at the time. 



In the ease oi hand-glasses the radial slide which holds the Micro- 

 scope, may be attached to the centre of the glass, or other material 



around which the mierophotographs are grouped. 



The spectacle glasses may be sighted tor those who require them 

 sighted, and plain clear glass for those who do not. 



In order that the practical application of my invention maybe clearly 

 understood, I have annexed hereto a sheet of drawings in which | for the 

 sake of illustration) my invention is shown as applied to a pair of 

 spectacles of the kind ordinarily designated ' frameless.' 



Fig, 42 illustrates the appearance of the improved microphotoscope 

 when worn, differing very slightly in appearance from an ordinary pair 

 of • frameless ' spectacles. Fig. 43 is an end view of the same enlarged. 



. a are the ear-pieces. 6, L the plates to which the ear-pieces a, a are 

 hinged, c, c are the spectacle glasses * to which the plates b\ '■•'■ attached to 

 the nose-piece d are also screwed. 



The arms e, t spring from the plates l> a!: I - b also tiir. 44 which 

 is a front view of the metal parts detached from the glasses) and follow 

 the curve of the spectacle glasses /. /'. These arms < are bent at 

 their ends, and provided with small round knobs <\ g which act as spring 

 clips, holding the glasses li. h which Contain the microph tographs 

 securely, and at the same time allowing them to be sprung out and 

 replaced by others with the greatest ease : i, i is the minute Microscope 

 before which any one of the circularly grouped mierophotographs on the 

 glass li. h may be brought by moving the latter round between the thumb 

 and finger. 



For this purpose the glass It. I. is made slightly larger than the 

 spectacle glass /. /. 



The mierophotographs may be copies oi books, pamphlets, news- 

 papers, or any written or printed matter, maps, charts, views, landscapes, 

 pictures, or any object or group of objects from which photographs can 

 be taken. 



The uses to which the improved microphotoscope could be put would 

 be similar to those described in my specification of the microphotoscope 

 above referred to. but in a more enlarged or extended sense, as a pair 

 of glasses /;. h which slip iuto the spectacle frames would be capable of 

 holding from two to three hundred mierophotographs. 



If these were copies of the Leaves oi a book, then in one pair of 



* There is no c in the drawings. 



