11^ Dr. Goring on the new Microscopes ^ S^c! 



Regular men of science and real connoisseurs in the vision 

 of curious and difficult objects, Avill, I think, admit, that the 

 improved Amician reflectors will ever maintain their ground, 

 and remain at a proud level among microscopes. I have no 

 doubt that they will descend to posterity as a valuable legacy 

 pretty much in their present form, nor do I think they will 

 ever be superseded by other catadioptric constructions. I 

 recommend them to all those who admire a compact, scien- 

 tific, portable, and most effective instrument, without desiring 

 an absolute working- tool*, or low powers to show large 

 common objects — (for the Amicians will not afford to come 

 lower than one quarter of an inch.) The optical superiority 

 of the reflecting principle I have so largely dwelt upon in the 

 commencement of this paper, that I trust it will already have 

 produced a due and just impression on the minds of my reader. 

 I have myself that kind of perfect satisfaction in looking into a 

 really exquisite reflector, which I never experience with any 

 other compound instrument. 



To the good old-fashioned single microscope pertains all those 

 advantages which result from extreme portability and compact- 

 ness ; it may be squeezed into the size of a snuff-box if requisite : 

 it must ever recommend itself, and maintain its ground as a most 

 useful working- tool for dissection, &c., with low powers. When- 

 ever we are at a loss with the compounds, as to whether we do 

 or do not see some particular object, it will always be highly 

 advisable to verify with a single lens. To the purpose of 

 verification, the high powers of the single microscope will be 

 eternally applicable ; the naturalist must ever respect it as the 

 most tried and faithful of servants, and the most valuable 

 appendage to the compounds. Did I myself wish to go over 

 the ground of other observers, to correct their views, to see 

 more than had been seen by them, and to push my researches 

 into the extreme penetralia of nature, I should certainly 

 attempt these objects by means of the deepest single lenses of 

 adamant and sapphire, which I could obtain or use. On the 

 inaptitude of the single microscope to particular purposes, I 



* It must not be forgotten that Mr. Culhbert has adapted the stand and appa- 

 ratus of the Amician reflector, to an achromatic as well as a single microscope, so 

 that it combines the properties of the three instruments. 



