Fa ae 
ie 
i 
Physics and Chemistry. 389 
Thus the direct and regular oxydation of the hydrocarbons yield 
successively aldehyds, monobasic acids and bibasic acids.— Comptes 
: G. 
6. On the Ethyl compounds of Thallium.— Hansen has suc- 
ceeded in replacing two atoms of chlorine in thallic terchlorid by 
hot water, ether and alcohol aud crystallizes in silky scales. It 
have TI(C,H,),Cl=TICI+C,H,+C,H,. 
By double decomposition with argentic sulphate and nitrate the 
author obtained the sulphate, [TI(C,H,).].5O,, and the nitrate 
Tl(C,H,),NOQ, which crystallize in leaves and are soluble in 
water, alcohol and ether. The author promises a further investi- 
however, for the scientific reader, by the ad ‘ eee 
elaborate appendices including in many cases entire memoirs. < 
Sides the diagrams and fi : 
hoff’s chart from x to of Angstrém’s d n’s chart from 
G to H, and with chromo-lithographs of the spectra of several fixed 
results of the analy 
up to the date of the Gablionticn of the lectures are also given. 
* Om Spektral analys. Upsala Universitets Arsckrift, 1866. 
