A panoramic arrangement for the Microscope 



by 



ß. J. Anderson 



in Galway. 



(With pi. XI..) 



The apparatus consists of a circular disc which is made to revolve 

 by means of a handle (see Fig. Plate XI.) The disc is fixed to one 

 extremity of on axle and the handle to the other. The axle has a 

 telescopic arrangement by which the disc is approximated to the handle 

 or removed farther from it. The disc is brought near to the handle 

 by means of a screw nut fixed at the end of the inner part of the 

 axle and it is moved away by means of a concealed spring. The 

 amount of this motion is not more than three millimetres. 



The disc and axle are fitted on a strong iron stand, supplied with 

 levelling screws. 



The frame is so arranged that the disc may be used in the ver- 

 tical or in the horizontal position. 



The vertical position is, perhaps, the most convenient for Museum 

 demonstration. 



The apparatus, when used in this position for Museum demon- 

 stration, is placed in a closed case. The handle with its binding 

 screw and focusing button are the only parts of the apparatus outside 

 the case. 



The disc is furnished with Microscopic slides. These are clipped 

 to the face of the disc by means of a segmented ring. The upper 

 surface of each specimen is turned towards the observer so that the 

 thickness of the slide is not involved in the focusing adjustments. 



Internationale Mouatsdth-ift für Anat. u. Phye. VI. 19 



