150 Miscellaneous Intelligence. 
may 
little remarkable that both of these American opticians were many years 
is not intended to impugn the originality of Mr. Foucault's discovery, bus 
simply to record the priority of American invention—it is within the 
knowledge of the writer that Mr. Fitz used the method of local corree 
as early as the year 1846. 
The largest telescope completed by Mr. Fitz was of the dialitic construe 
tion, having an aperture of 16 inches. It is mounted in the private ob- 
servatory of Mr. Van Duzee, of Buffalo. 4 
The principle achromatic telescopes made by Mr. Fitz are located as 
follows : 
One of 13 inches aperture at Alleghany City, Penn. 
ie - Tyudley Observatory. Albany, N. Y. 
ed udiad 5 Se 2 Ann Arbor, Michigan. o 
ee ee . (not yet mounted) at the Vassar College 
oughkeepsie, N. Y. ! 
alain 2 ies “a the private Observatory of Mr. L. M. 
erfurd, New York City. 
4, pete ae ig U.S. Military Academy, West Point. 
_ “ ptivate Observatory of Mr. Vickars, Baltt- 
more. 
oe . belonging to the Hon. 
Chargé to Monte Video 
eo ee “ Elmira Female College, N. Y. 
ate ” Haverford College, Penn. ee 
pee: eae _ private Observatory of Mr. John Campbell, 
New York City. ‘ 
co ee yf constructed for the U.S, Astr. Expeditit 
to Chili, and now there. 
mee. 8f * “ private Observatory of Mr, Robert Vi 
Arsdale, Newark, N. J. 
Mr. Fitz’s optical labors were not con 
copes, but almost immediately u 
Within the compass of a short notice it would be impossible to e? 
merate all the instrumental additions and simplifications for which | t 
scientific world is indebted to Mr. Fitz, and perhaps it would not be 
he power of any one person to recall them all: they could only be g 
red trom a comparison of the experience of those who knew and ré 
the benefit of his fertile ingenuity, the achievements of which were 
uded to in his modest and unostentatious conversation. 
