PLATE LI. 



Fhoiograpbic microscr pe camera used by Mr Delves, arranged by Hr. Hi^hl^y. p _3 



Fig. 333. 



mirror condenser with adjustment to fit on the end of the above camera (Fig 3J~) as improved by 



Mr. Highly, p '-36 



Fig. 3:19. 



Another arrangement stowing the object glass, stage, fine adjustment. Sec.. With 

 mirror and condenser. Mr. Highley. p. 236. 



To face page 



