Scientific Intelligence. 
is is represented by the formula Na,O, or NaO,. The binoxyd of sodium 
soluble in water, and the solution on evaporation gives large tabular 
scale of a hydrate, which has the formula Na,O0,-++-16HO. Another 
hydrate produced by the efflorescence of the first, has be formula sig 
+ — Quar. Journ. of Chem. Soc., Oct. 1861, p. 2 
9. On the constitution of Crocon ic and Rhodizonic Acie pee: finds 
the punta. of crystallized croconic acid to be C, 10 F SHO, ac- 
cording to which the aci aid 3 is bibasic. The Bio ue fab of its +o 
cipal ate are as follow 
2. CipBag0-+6HO. hetucoyaaint CipPb2010+-4HO. CioAq2Oi0- 
The yellow solution of croconate of potash is easily decolorized by oxyd- 
izing agents. Nitric acid and chlorine give rise to a new acl which the 
author terms leuconic acid, the empirical formula of which is Cols Ore 
the rational formula being probably Cro oH sDaa t O,, so that the acid is 
tribasic. ; 
The rhodizonic acid obtained by Brodie, up the action of absolute ae | 
hol on the compound of carbonic oxyd and potassium, has probably 7 
formula C2003 gk, or C,,0,K,, and by solution in water, rene, 4 4 
oxygen and giving off potash, is converted into croconate of po : 
_ acid of Will is clearly different, and dissolves in water without au alka 
line reaction Ann. der Chem. und Pharm., exviii, 177,187. © F 
On the presence of Rubidium and Cosium in Triphyline ; +n » s 
Ww. ot Jr., of New H Have en. *—Having obtained a quantity of i” 
“ oe 
SSactngeaed ee 
“ ~ * ‘rubidium, 
‘ ‘ ‘ ’ ’ 
ee, pees i SA 
y Fa 2 ‘ Cae J 
- - 
- - 
- - 
- - 
- - 
method of estimating the rubidium and cesium dep 
hd fbaolubilicy of their platino-chlorids as compared to that 
salt sd the difference of grove Ss is not 
give very accurate a alytical results. The above approxima 
“Serves to show, that Tike some other eae containing: 
contains small quantities of these new and highly in 
