50 Scientific Intelligence. : 
Chlorophyll is perhaps the only substance that corresponds to 
some extent in its action with the demand of the theory. — 
certain that this substance unless it is used in very 
tion, allows the yellow rays to pass freely, stopping only the | 
SCIENTIFIC INTELLIGENCE. : 
I. CHEMISTRY AND Puysics. : 
1. On the true Ethyl Sulphate-—By acting on ethyl sleohol Te 
wok a sulphuric acid, Wetherill obtained a neutral body 
which has been regarded since that time as the true sulphur 
ether, SO, | Salat: Later Baumstark obtained a substance My. 
2 
acting on alcohol by sulphuric oxychloride, which he sup eo 
identical with Wetherill’s ether, but which Max Miller regardel 
a8 an isomer of it, ethyl oxyethansulphonate, C,H, } $0,00.Hy 
Mazurowska has prepared anew this latter compound, and om 
examined it more thoroughly. It appears as a yellowish, odor: 
neutral liquid, of syrupy consistence and having a sp. gt. of } Fs 
It dissolves readily in water, decomposing and becoming Tis 
eated above 100° it carbonizes, Analysis gave it the formu" 
