FOREWORD. 
In presenting this new edition of our catalogue of microscopes and apparatus, we believe that 
the range of instruments will be found to cover all requirements, from the simple microscope 
required for elemeritary school use to the elaborate instrument for the most exacting research, 
with the exception of petrological and metallurgical apparatus. 
The application of the microscope to new branches of scientific and industrial research has 
led us to produce new apparatus to meet their requirements. For ultra violet microscopy the 
Beck Barnard microscope is fully described and the apparatus for fluorescence microscopy, such 
as quartz condensers and aluminium surfaced mirrors, are catalogued. 
A number of new model microscopes are included ; two research models particularly adapted 
for work with both monocular and binocular vision have special features. The angular model 
is on a completely new construction which departs from conventional design. The other is a 
rigid stand with interchangeable monocular and binocular bodies. We have added a moderate 
priced portable microscope capable of high power work for the benefit of travellers. 
The range of object glasses now made includes a series of achromatic, apochromatic and 
monochromatic, also a series of anastigmatic lenses for macroscopic work. 
The series of illuminators is made complete for every class of work by the introduction of the 
medium power dark ground illuminator and the Beck Chapman opaque illuminator. 
Microprojection for class demonstration having become very popular, we have introduced 
two models to fill this requirement. 
We make many types of special microscopes for industrial and other purposes, which are 
not catalogued because they are specially made for a particular purpose or which form parts of 
apparatus or machinery and are very varied in their construction. 
For routine work we think that our No. 29 series of microscopes represent a combination 
of sound design and construction and economy in cost which has not hitherto been attained. 
Special catalogues are issued of petrological and metallurgical microscopes, projectographs, 
epidiascopes, spectroscopes, spectrometers and polarimeters. 
