Chemistry and Physics. 138 
oxidized, the condensing tube contained about a gram and a 
half of a white crystalline body, having the composition and prop- 
erties of camphor.—Jbid, pp. 628 and 631 Ww. G. 
5. On the combinations of yttrium and erbium.—CLEvE and 
in acids ; its density is 5-0 hen heated for som s in 
porcelain furnace with a little borax, it crystallizes in transparent, 
microscopic prism ; rate is a white, gelatinous precipitate, 
e no absorp : 
less soluble than the corresponding salts of erbium. The formulas 
Na salts examined are as follows . 
1,+40H, YBr,+60H, YF, Fe,Cy,, Y,K.+40 
: ate. +) 10,09 5% () 
oY, +50H, 
ErCl,+40H, ErBr,+60H, ErF, Peay gens LOH, 
Y(CyS),+46H,  PtCy,Y+70H, Tord), +cett, 
Er(CyS),4+40H, PtCy,Er+70H, EN Ags +608, 
X(Br6,),+00H, Y¥(@,)z+20H, — Yolh05 04 COE 
Er(BrO,),+60H, Er(I@,).+20H, Eel mdko, +e0Hl, 
pod pond in composition to the ae Rs of dag eae sf wrt 
iu The e nearly the same atomic Vo! 
ur sulphates hay y stals, which dissolve 
