Dr. P. H. EYKMAN. “New methods of stereoscopy.” 
Fig. 2. 
Petvaphany in lozenge shape. Position of the projectioncentres. 
é 
Fig. 5. Fig. 6. 
Double mirror-stereoscope. Symphanor, resembling the previous figure. 
| 
Fig. 4. 
Triphany. Position of the 3 footspoints on the plate. 
Fig. S. 
Symphanator for simultaneous exposure with 
Réulgenvays and with ordinary light, 
\ | 
ae Ald Ok 
iele 
Jom, Fig. 10 
R: IL Stereoscopy on the sereen. 
- Fig. 1. Fig. Il. 
Symphanor for surgical use, Metaphany. 
Fig. 9. 
Symphanor for diminished images. 
Proceedings Royal Acad. Amsterdam. Vol, XL 
