Aluminium— Glucinum. 119 
M. Bean has also compared the battery of Wheatstone with that 
of Daniell, adopting the method of the opposition of piles. According 
to this phearver, in Wheatstone’s batlery, the cause which has the most 
influence upon the electro-motive ne is the diaphragm. Thi is cause 
arious preg a the numerous communications which 
have been made to the Academy, there are new facts relating to the 
sexes or non-absorption of the nitrogen of the atmosphere by 
Plants. M. Boussingault rejects the theory of absorption, which his 
nibs experiments have failed to verify, and M. Dumas agrees with 
him in opinion. ut a young chemist has appeared, who sustains with 
Courage the opposite view, and appeals to many facts and experiments 
In his support. On sehiush, side is the truth? ‘The question is too near- 
ly poised, soon to be solved. The debate has He piitiad a sensation 
equalled ad me that of another memoir—one on the preparation of 
nai aluminium economically, aeaitap to the process ‘ies reed te: 
Polassiam and sodium, using a very high temperature. We propos 
1 another communication to give views of the lamp and forge mae 
Deville uses in his laboratory for fusing the most refractory bodies. 
The note of Deville has brought out a number of communications on 
the Subject of the economical preparation of Aluminium, none of which 
st web been verified, and we wait for positive facts before touching 
ot 
While Deville has been occupying himself with Aluminium, his as- 
Sistant, M. Debray, has been studying Glucinum, which metal (as well 
as Aluminium) M. Wobler was the first to obtain separate, although i in, 
aci 4 der no circumstances. Chlorhydric and sulphuric 
‘ ies, even uciiped, dissolve it, disengaging hydrogen. Potassa disso 
T, cold ; ammonia is without action. 
qs Durni ings. ee interest a been at by a paper of M. 
Yreul’s to the seth i of Sciences, taken fro so epcer ie tion of 
tur K now in press, in which he a big ae phenomena of table- 
eh > This Stedinmscioh el chemist does not confine himself to this 
“Divin alone, but connects with it, the “ tice Pendulum,” and 
‘Vining Rod,” and he endeavors to reduce these phenomena to cer- 
i In 1812, he noted the phenomena of the pendulum 
. we peter addressed to Ampére, and showed that the ——- move- 
nt Was produced only when the aye of the experimenter was fixed — 
