Universal Balopticon 



This new Science Lantern is the outcome of many years' careful study in 

 projection lantern construction and offers many facilities to render projection of the 

 various kinds successful in every way. 



The projection lenses and condensers are carefully chosen to suit the source of 

 illumination and projection distances, in order to furnish well-defined and brilliant 

 images of either opaque or transparent objects on the screen. 



The manipulation of this apparatus is the simplest possible, and the change from 

 one mode of projection to the other only requires a few seconds. 



This apparatus is also arranged to be equipped for either Cinematograph 

 Projection or Projection Microscope. 



It is a univeisal projection apparatus in the true sense, and has already met with 

 great favour in many Scientific Institutions and Learned Societies. 



Price of the complete outfit, with vertical attachment, jy/ija •* k •**•% 

 and with projection microscope <fe^r^r lO IU 



Same outfit, with vertical attachment, but without nqe q r% 

 projection microscope 3G#<*tJ ",, ^ 



Demonstration of this Instrument will be gladly given in our Demonstration 



Rooms by appointment. 



Descriptive Booklet "Di V.5" (Ealopticons) on application. 



Also MICROSCOPES (over 106,000 sold), MICROTOMES, PHOTO-MICRO- 

 GRAPHIC and DRAWING APPARATUS, CENTRIFUGES, GANONG'S 

 :: APPARATUS for PLANT PHYSIOLOGY, VISCOSIMETERS, etc. :i 



Bausch & Iprab Optical (5. 



37-38 HATTON GARDEN, LONDON, E.C. 



Or through all Dealers. Factory : Rochester, U.S.A. 



(x) 



