70 



SUMMARY OK CURRENT RESEARCHES RELATING TO 



MICEOSCOPY. 



A. Instruments. Accessories, etc.* 

 (1) Stands. 



Watson's Vulcan Metallurgical Microscope.f — This Microscope 

 (fig. 5) has been produced for the immediate examination of metals at 

 the various stages of manufacture and machining. The manipulation 



Fig. 5. 



of the whole equipment is so simple that no adjustments are necessary 

 other than the rackwork focusing. The instrument can, therefore, be 

 used by those who are not microscopical experts. The stand is so 

 arranged that it will find its own level on any cylinder of metal : for 

 flat surfaces it stands on the four points. The focusing of the objective 

 is by diagonal rackwork and pinion. At the lower end, immediately 



* This subdivision contains (1) Stands ; (2) Eye-pieces and Objectives ; (3) 

 Illuminating and other Apparatus ; (4) Photomicrography ; (5) Microscopical 

 Optics and Manipulation ; (6) Miscellaneous. 



t W. Watson and Sons' Special Catalogue : Microscopes and Accessories for 

 Metallurgy, p. 5. 



