8 °2 Scientific Intelligence. 



tion of potassium platino-ohloride bv hydrogen sulphide, washing 

 the precipitate by deputation with hot wat.-r. and iri _ !■•: 

 several days on the water-bath, during which latter process the 

 oxidation takes place. It appears as a heavy black powder, 

 which on continuous hating at or above 100° suffer- 

 " X!,lan "" I( tin h< in.,. , , , 1. xv .,, ; . i, so ,,...!,< m 

 ous and sulphuric oxides are formed. •. „i ;,!,ri , ,„■ J. j..;;.' On 

 examination it was found to contain the elements of water; and 

 upon analysis two products were distinguished, one the normal 

 hydrate PtS j £**, the other derived from two molecules of this 

 by the loss of water, £j| j 0°** The analytical results for the 

 latter were satisfactory ; but the former could not be obtained as 

 pure. The sulph-oxide (PtS)O does not appear to exist tree. 

 Ine author finds the body to be an . i„ r ,-ti. ..xidizei H,- v i.-ld- 

 mg A i£?A glving S ° 3 ' HC1 evolvi "y rl - M1 pr-.du.-ino >!.\o, 

 ' . -valir a-id giving C0 2 , ferrous being oxidized to 

 lerric salts, alcohol to aldehyde and t.,| „ „. -. i- ! in- benzalde- 

 hjde.~J.pr. (>/,., H, xv. I. dan. 1877. o. r. b. 



5. Prepamtinn of <,!,,.;,/[;,■ ,„•;,/ /„, ,.,,/,„.,;„„ n f ()r,i'li<> will 

 -<-UMM.MYr.rs has succeeded in |»ro.i,„-i Iur o-] v ,.,/llic acid from 



oxalic, by tin- action upon it ,,f nascent livdro-vn. The oxalic 

 Ived in water, was mixed with zinc turnings and heated 

 tor eight daj> m a water-'oath. The liquid was then filtered, 

 treated with milk of lime. a» iin filtered the excess of lime re- 

 moved by oxalic acid, boiled to destroy the glyoxylate, agafo 



■'■*-■■■;..■■.,:..■... < / ■:• ,- 



warty masses ,,.,.,, ,, uhi( , h H ., ^ , ;ke wax and which 0Q 

 analysis proved to be calcium -lv«-..llat.-. crv^n li/.-l with four 

 molecules of water. 1 - its were also prepared 



and examined.— Bull. S,,r. Cf>., II. xxvii. ::. Jan. LR77. G. f. b. 



6. On the Decomposition of f/„ <>;} . , /;, ,, >;.„ „t 1,'njh 



■ tres.— Schuxtz has studied the products of the action of 



high temperatures upon oil of tu, tabes and 



heating them m a Hofmann furnace to a dull red heat. The oil 



"tween 158° and 161°, and was caused r„ How into the 



neated tube drop by drop. Carbon was deposited, combustible 



■"^•i «!■!.!. vv,,v ,,., ,N: l „.-n!d.:„Ml a black tar 



Collected m the well , led reeei 



fractionated, and fe] |. The por- 



200° afforded 1„ liZ , 1; , 



; belowW, naphthalene; and that 'above : 



1 F°b ne ?* methyl-anthracene.— Ber. Berl. C'/iem. Get., x, 



