226 Scientific Intelligence. 
their mutual relations will probably be expressed by the follow- 
ing equations: 
Lri—7Lvi+6L™' = 180°, . . . (8) 
Vv [i 6(LY*—L*") a 0, tare (4)* 
SCIENTIFIC INTELLIGENCE. 
I. CHEMISTRY AND PHYSICS. 
nm the ammoniacal platinum bases.—CLEvE has continued 
his slabovata investigation of the ammoniacal compounds of plati- 
num, and has des cribed a number of new compounds containing 
aniline and ethylamin. By heating chloride of plato-semi-diamine 
in a sealed tube, with weak alcohol and an excess of aniline, a white 
crystalline powder is obtained, which has the formula, 
2NH 
Pe} arc, ¢ le 
This salt gives with chlorplatinite ee potassium a voluminous rose- 
colored precipitate corresponding to the green salt of Magnus, and 
having the formula 
pr { 2NH X(NELC,)C1- “Ol t a : 
The aie and oxalate of this base have respectively the formulas, 
2NH 2 
Pt | (NE (NHC )f2NOs, and Pt | a(NILC tes 0,+0H?. 
By evaporating the chloride of this base with aniline, water, and 
a little aleohol, a new chloride is obtained containing one atom 
less of aniline, ‘and 26 er the formula, 
2NH 
Pt 13 NILOI, t Cl,. 
By the action of iodine upon the first chloride ammonia is diset 
gaged, and a yellow powder having the formula 
NH 
Pt NHC, | l 
is hee en ath We may consider this iodide as derived from the 
chloride, 
N NH, 
Pt} NH C,. NH,©, tL Cl,, 
by the loss of the two external molecules, NH, anid NH,Cs- 
nder the same circumstances the isomeric chloride, 
* a the mone fret referred to, Mr. Stockwell has shown that while “ = 
angul stance between the ‘perihelia of Jupiter and Uranus is —S y 
180", " se Tongitude of each may differ from its ae ~ aS a considerable 
fact, the present angular distance is but 
