Oxymuriatic Gas and Oxygen, Be. 415 
Bakerian lecture, but which were calculated from the ana- 
lyses of sulphates, it follows that if the muriates of baryta, 
stroutia, and lime, be regarded as containing one proportion 
of oxymuriatic gas, and one of metal, then they would con- 
sist of 71* barium, 46 strontium, and 21 calcium, to 32-9 
of oxymuriatic gas. |’ 
To determine how far these numbers are accurate, fifty 
grains of each of these muriates that had been heated to 
whiteness were decomposed by nitrate of silver, the preci- 
pitate was collected, washed, heated, and weighed, 
-The muriate ‘of baryta, ‘treated in this war’, afforded 63 
grains of horn-silver, | 
The muriate of strontia 85 grains, 
The muriate of Jinie'1'25 grains. |< rat: 
From experiments! ito’ 'bé detailed in’ the next section, it 
appears: thay horn‘sitver consists of 12 ‘GF silver to 3°9 of 
oxymuriatic gas,sand /eeosequently that’ barium Shoald be 
represented -by 65-1, istrontiudi by 46-4) and calcium by 
20°8islinvia bel} agsidusioy vidio diueesiog 
th 2291 fo oglt) beter »piluote Yo 90s TOE, fii 
4. On t he Combinations, of ihe Cammon Metals, with Oxygen 
6 vilodvur 91s nd Oxy myriatic Gas. You it 
In theclimits which itris aistial'to'adopt'in this lecture, it 
will not: be possiblecfor me to give! more than’an outline of 
the humeroussexperiments2that |Phave madeon the com- 
binations of oxymuriatic gaz with metals; I must confine 
myself to, aegenerali! sratemienl Sof !#HE ‘hode Gf sperating, 
and, thewnesultssor bdbed sit! all! cases (SAP retortS of green 
glass, containing fron? three to bigteubieal inches? farmshed 
with stop-eoek son The wmewallie siihitaivces Were iitroduced, 
the retort -exhausteck candi fillid wi di! tle idag (OR Acted up- 
on, heat was applied uby nyeas OfaSpiPiteldnip, and afer 
cooling, the: residtsi were lexainiteds* 4nd! (he residual gas 
analysédtirs words oved bisaedT bis oneal yout,. 4 
All ihe! metals: that (varied; sence A" Siler edd? nickel, 
cobalt, andogoldy wien heated ¢ burnt Ip the dxymuriatic 
gas, and the volatile murals withoflane, NUARenIt} antimony, 
tellurium and zinc with a white flanve ys niérciiry witha red 
flame... Tin, became liam idl wliildnesspanePion and cop- 
per to reducss': tunaesten tod ninnGanesé td dull redness 5 
platina was scarcely Vacwd Upon at Whe heat oF-fusion of 
the elass, ieee i 
Phe product from arsenic was butter of arsenie ; a dense, 
. rr , . 4 > made 
| W€ Mr James Thomson's analvate of sulphate of barytes be made the 
ba.is of eateat won, sulphuric acid being estimated as 36, then the number 
sepresenGig barium will be wbore 65'S, 
lipid, 
