5 Scientific Intelligence. 
eties, In the case of sulphur, the — form has a density of © : 
of 1 
7 and the amorphous 1°92; now the latter is the more 
vendily a by nitric acid and siete wigs, combines bey: 
nascent hydrogen more readily, and is more active in forming — 
eed Se 
trithionic acid, as Berthelot has shown. Amorphous red selena 
according to S$ 
chaffgotsch, has a density of 4:26, the vitreous - 
activity. In the case of phosphorus, however, the result is well- 
marked. Common hosphorus has a density of 12100 (210 
ity are 
son > ohcepnike even reducing ¢ copper, silver and lead fraad 
ne their s solutions. Carbon I as diamond has a density of 3°5, while the 
Hee 
600° t to 800°; : anal that saat at oop ate Le os oe 
‘a — of 2-00, and inflames at 1200°. Similar phenomena are — 
eee with the various s forms of silicon, boron, arsenic and tin. — 
se does the chemism increase with the density. The 
author, therefore Se that the activity of the chemical pro- 
ess stands in direct relation to the increase in density which 
sakes place pasted sits ieal union. —Liebig’s Ann., eer, 113, a : 
ee a 
— 1883, 
. On the behavior of ascent —_* in 
ce of ‘Oxy: . 
748.—TRAUBE | has given his n the production of : 
Bice roxide which differ adnay fron those of 
ig oll example, water acts on zine at ordinary te tem- 
oe ernie of oxygen, zine hydrate (not zine oxide) is 
2 4 a togel ler er with, = = oo to the equ 
= Fo SHH +O-=Z0(01) tH.0e | Le | 
