7 
Correspondence of J. Nickles. 95 
tinctly hexagonal, with the rhombohedral planes R and — 
in some cases entirely obliterating the prism. The angles an 
ured were as follows: O: R 119°—120°, O: ea Hs 149° 40’, 
PoF 120° 0: TF 90°: 
proof of the rhombohedral character i isos mineral is 
therefore oeaone demonstrated. ‘The act that Dr. _Auer- 
Yale Analytical Laboratory, May 23d, 1861. 
Arr. XV.—Correspondence of Jerome Nicklés, dated Nancy, April 
13th, 1861. 
Academy of Sciences—Distribution of Prizes.—The session of the 23d 
of March last commenced by the distribution of prizes, and closed with a 
eulogy of Legendre the geometrician, pronounced by Elie de Beaumont. 
he Astronomical Prize was divided between five observers who have 
discovered planets in the course of the year 1860. 
ese astronomers laureate are : 
nac, who discovered a este not yet named, at Paris, Sept. 12; Fer 
son, who discovered Zitania Sept. 14-15 at Washington; Forster and 
Lesser, who discovered Erato Sept. 14-15, at Berlin 
Concordia is the first of the five telescopic planets ‘discovered in 1860. 
ae, is }zemarkable that the other ok were all eg eg in Reptemhen 
passage of a planet across the sun’s dish, March 26, 1859, not having 
been Sy pina by other observations. 
erian Prize—This is a eee me ip designed to reward 
researches i in the different branches of N. Science to wis Cover 
as most devoted. It has been saan ne times. rst 
to Agassiz for his work on Fossil Fishes ; the second to Miller of re 
lin; the third to Owen. Now this prize has been awarded to Léon 
Dufour of St. Sever (Department of ie for his patient researches 
in the footsteps - Swammerdam and. specs Léon Dufour has been 
* See this fae [2], xxix, p. 415. 
