428 Scientific Intelligence. 
172°91; or 17301 as a mean. The author also describes ytterbia, 
and its hydr ate, nitrate, anhydrous and hydrated sulphates, 
selenite, and oxalate.—Ber. Berl, Chem. Ges., xiii, 1430, Ju ly, 
be used: the first, based upon the fact that scandium nitrate is 
far more easily decomposed by heat than the correspondin 
ytterbium salt; and the second, which rests on the behavior of 
a double sulphate KS0)), Se,(SO,), being poe Es while 
ytterbium sulphate is easily soluble in such a solut Three 
ixed earths were dissolved as atone, ciphae in 
eotasad basket. In a few hours the walls and bottom of the 
vessel were covered with the or fatalline double salt. After a 
couple of days, it was collected and washed. A weighed quantity 
of the earth from the eee Soh verted into sulphate gave an 
atomic weight of 172°88, wing this filtrate to contain pure 
erbium. The po otassium- eae sulphate itself was converted 
mto nitrate and fractionally decomposed. our products were 
andium. oe this last fraction, four further fractions were 
obtained and the pure scandia prepared by igniting the oxalate. 
is was weighed, sreeeaber in nitric acid and evaporated with 
id ex 
sulphuric acid in excess till fumes no longer appeared. These 
fractions gave atomic wetbtile of 43°99, 44°07, 44°05, and 44°02 
respectively; or 44°03 This atomic weight, 44, ‘coin- 
and also the eines nitrate, sulphate, selenite seid oxalate. The 
molecular sei “ Se,0, is 20°81.— Ber. Berl. Chem. Ges., xiii, 
1439, July, “ 
On a ie ante in Rosin oil. —Kew.se has examined the 
lighter. oils obtained from the distillation of rosin and finds that 
they contain a new cymene. After washing with sodium hydrate 
solution, and frac semaine 5 several products are obtained of ives 
stant boi iling points. One of these boiling at 170°-178° C., wa 
ee aon ith ier nee sulphuric acid, in which it atsscived 
in \aleohl “and yielding, when treated with ac pheoaplions chloride 
and ammonia an a-cymene-sulphamide fusing as 73° Further 
