112 Correspondence of J. Nickles. 
with an acid, its molecular constitution is changed so that its rotatory 
power over the polarized ray is reversed from right to left, why then 
should it be impossible to convert left-handed rotaton to right-handed? 
ate changes in the scientific corps at Paris.—A considerable move 
ment has taken place among the Rusia, ~~ living’ in Paris—or who | 
pass the larger part of their time in that ¢ 
Fay 
of the Parole of Sciences. at Miltheiiten: M. Desarns has been ap: — 
i nied Professor of Physics to the Faculty of Sciences at Paris. M. Fou: 
been nominated as Physicist to the Paris Observatory. M. — 
3 made Professor of Botany at Clermont. M. LatLemanp to 
AVRE bs si Professor 
ém mu des végétaut par 
Bog Pemys grand in £, 
s par auteur. New 
work i 
~ 
> 
(which he describes with care in his work), M. P. Laurent has beet a 
able to observe better than his predecessors, to group facts and phe — 
nomena which had previously escaped notice, and to reunite in one spe 
cies — which have before been regarded as wholly distinct. 
is volume has made a great sensation among micrographers, U! 
happily rare in France. The second and. last volume will not be less 
curio 
Mecailves analytique, _ Lagrange. 3d edition revised, corrected 
and annotated, by M. Bertrand; t. ii, Paris, Mallet-Ba chelir —We 
have already announced ‘the publication of the first volum this 
work. The second volume treats of Dynamics. It is dcaitbuded by sev" 
eral —— either by Lagrange himself or his contemporaries. 
(Euvres Complétes de Fr. Arago, t. iv, containing the historical Eo 
logies of ‘Malus , Gay-Lussac: the biographies of Coperni 
Brahe, Galileo, ‘Newtoo; Kepler, Huyghens, Cassini, Laesdllés Roemet : 
and a great number of other astronomers and physicists. 
