1897] 



MICEOSCOPICAL JOURNAL. 



385 



plasm, and in this way the clusters of amoeba were pro- 

 duced. The slide was now again laid aside, and on again 

 resuming the observations eighteen hours after, very 

 few forms were found, and they differed in no way from 

 the forms seen the evening before. If food could have 

 been supplied the observation could perhaps have been 

 extended so as to witness the full development of these 

 young forms. 



To make this history of the sporular development of 

 the Amoeba villosa (and by inference all amoeba) com- 

 plete, there is only one essential requisite, and that is to 

 trace the origin of the nuclear-looking bodies to the nu- 

 cleus. 



Multiple Images in Mirrors. 



By WM. BALFOUR STOKES. 

 (Read before the Quekett Club, December 18ih, 1896.) 



The origin of multiple images in plate-glass mirrors, 

 and their behaviour, seems to have attracted but little 



notice among microscopists. They have been noted 

 and a partial remedy has been prescribed, but their ori- 

 gin seems to have been either too simple or too complex 

 for explanation. 



When attention has been called to these images, 

 simple, and I believe efficient, reasons have been given ; 

 but their authors did not explain the behaviour of the 

 images when the mirror is revolved. 



A figure will best show my own idea as to their origin. 

 In Fig. 1, A is the glass surface, B the silver surface, 

 the object, aud E the eye. 



