Miscellaneous Intelligence. 439 
3. Two New Planets.—M. Chacornac, at Paris, discovered January 
12, 1856, a new planet, (3s) fainter than a star of the 10th magnitude. 
On the 8th February, he discovered another planet (39) having a bright- 
ness of a star of the 8th or 9th magnitude. 
In announcing these discoveries to the Academy, M. Leverrier re- 
marked that he was more and more convinced that a large number of 
small planets exists between Mars and Jupiter, and that before 1860 
probably as many as a hundred will have been detected. 
4. Elements of Fides (36) or (37), (Astron. Journ., 90.)—These 
elements were computed by Mr. George Riimker from the observations 
at Bilk Oct. 6, Berlin Oct. 23, Hamburg Nov. 2 and 13. 
Noy. 0:0, 1855. M. T. Greenwich. 
=. 4 . a 
Mean anomaly, 22° 17 40-3 
Long. perihelion, - - - 63 26 6°9 Mean equinox, 
—' ase. node,” %= - . 8 8 56 ‘24 Jan. 0-0, 1856. 
Inclination, 2 - : «8 1] 43°6 
Angle excentricity, - . 8 22 25 ‘8 
og. semi-axis major, : . 0415680 
** mean daily motion, - - 2926487. 
5. Elements of Comet 1855, Il, (Ibid..)—Mr. George Riimker has 
computed the following elements from the observations of Berlin Nov. 
12, Bilk Nov. 15, and Hamburg Nov. 20. 
Perihelion passage Nov. 25, 66041, 1855, M. T. Greenwich. 
ng. perihelion, - - 85° 21 41” Apparent equinox, 
ie c. node, - - ae a a7 ov. 15. 
Inclination, : - . 10 16 29 
Z. qe, - - » - 0-088070 
Motion retrograde. 
VY. MisceLLangous INTELLIGENCE. 
1. Postscript to Prof. Rogers’s Paper on Binocular Vision; by the 
Author.—Since the last page of this article was put to press I have seen 
in an elaborate memoir of Czermak, entitled ** Physiologische Studien,” 
the first clear recognition I have met with of the fact that in stereoscope 
vision there is necessarily an interruption of the usual relation between 
the axial and refractive adjustments of the eyes, Lest my illustration 
of this subject, in Part I .. 4 and 5, should be supposed to have been 
Suggested by the remarks of this able observer, | deem it proper to 
state that this and the other chief points of Parts 1 and Il of my memoir, 
having been for some time familiar to my thoughts, were communicated 
to the Warren Club in December, 1854, and to the American Academy, 
Abs : 
after my MS. was in the hands of the printer, and did not reach the 
Boston Nat. Hist. Soc., where I have just met with it, until the 16th of 
the present month, nearly eight months after my ideas on this subject 
were in print. I may add that it has given me much pleasure to find 
the views of so philosophical an observer coincident in this particular 
with my own. 
Boston, Feb. 26, 1856. 
