374 Scientific InteWgmce. 



obtained which possesses all the properties of coniin, the formation 

 of which may be represented by the equation : 



Dibutyraldin. Coniin. 



According to this synthesis, the structural formula of coniin 

 would be : 



€H-€H2-€H2-eH3 

 €H-€H3-€H2 -€H=NH 

 The author promises further details. — Berichte il r Ih-'^ 

 chem. Gesdlschaft, Jahrgang iii, p. 946, \^ . 



3. On the basicity ofuranic oxide, molijbdic, borJr n.nl i, 

 «c^■c?s.— Schultz-Sellack has found that the normal sulpli;, 

 antimony and bismuth maybe easily prepared in an anin 

 state, by dissolving the oxide in moderately concentrai." i 

 phuric acid and evaporating. Both salts crystallize in iiiie ir. 

 they are respectively Sb2(S04)3 and BiglSOJa. On the - 

 hand, uranic oxide, molybdic, boric and nitrous acids form anal.- 

 gous compounds, the formulas of which are : 



(HNe)se4, (:N'0)2se4+se3 



(HBOjgSe^+SOg. 

 The uranic and molybdic salts are crystalline ; the boric salt is 

 a thick fluid or glassy mass, which could not be obtained of con- 

 stant composition. The analogy between some of the above salts 

 and potassic dichromate is easily seen, when the formulas are 

 written (lre)2t^20„ (NO)2S2e7, (1160)^^20,. In a subsequent 

 paper the author describes several other compounds ( ' 

 —■—-•- '•- ^ , . , . .,^ .. -1^.^,^^ 



, ._ obtaiueil 



^ c-— a~a-7 "- - / sulphuric 



crystallizes in prisms which" fuse at 168° C.'^ 

 rium salts have respectively the formulas Aggtjg^: '^"'^ -Dar^a;^,. 

 The salts of arsenous and antimonous oxide, As2(i504)3-}-^^3 

 and &b2(Sej3+S03, or, as we should prefer to Avrite them, 

 As3e(S20^)2 and '^\>2^{^<i^^)2^ are both crystalline and easil} 

 decomposed by water. — Berichte der Deutsehen chem. GeseUscha/t. 

 iv Jahrgang, p. 12 and 114. ^^*- ^'• 



4. Researches on Vanadium.— RoscoE has communicated to the 

 Royal Society a further instalment of his very valuable and inter- 

 esting researches on vanadium. Metallic vanadium absorbs hy- 

 drogen in quantities which vary according to the state of division 

 of the chloride from which the metal is prepared (YCl^) and ol 

 the metallic powder itself When the compound is exposed to dry 

 air it takes up oxygen, forming water and an oxide which hAS 

 nearly the formula VgO. 



Vanadic oxytribromide, VOBrg, is formed by passing the vapor 

 of bromine over vanadic trioxide, VgOg, heated to redness. It ^ 



