INVERTED MICROSCOPE. 



379 



^want of something more effective, I was led to the construction 

 of the inverted microscope entirely with reference to its chem- 

 ical uses, other purposes to which it might be applied being 

 of secondary consideration ; but I would here remark that 

 since its completion its value even in this latter respect yields 

 to no other form of instrument, and has induced me to change 



its original designation of Chemical Microscope to that of In 

 verted Microscope, as the former name might mislead as to the 

 extent of its uses. 



It was important for the arrangement in question so to have 

 the relative position of the stage and eye-piece that the eye, 

 while on a level with the latter, could readily see the former 

 and guide the required manipulations. 



Without entering into any detail of the steps taken in the 

 construction of the instrument, I will at once proceed to a 



