( 549 ) 



Silxcr cniildiiicler N". 2. 

 Wciglit ot" |tl;iliiiimi (lisli -{- silver 7J.4r).'i() i>;r;ims 

 // // V 34.9902 „ 



weio-ht of silver 36.4628 o-mms 



wciuhl of (v\|»Iosi()iitiiho -|- reiiiilns -|- |»laliiiiiiii w irc 55.()2H1 grams 

 „ „ 41.0780 „ 



weiiihl of regulns -f- [ihitiniuii wire 13.950 L grmns 

 \voi<>lit of plalimim wire 0.2G9G ,/ 



weigh! of regnlus 13.6805 grains 



From lliis resiill llie e(iui\aleii( weight of ihe aii(inuni\ is caiciilaled 

 as foUows : 



107.93 



— —— X J 3.6805 = 40.49. 

 36.4628 '^ 



The resiills so oltlaiiied are eollecled in llie foUowiiig table, (p. 550). 



From this table we see that the atomic weight obtained increases 

 with the eoiieentration of the Sb Cl^ sointioiis and varies IxMween 

 120.87 and 121.89 within the eoncentrations 2. .3 and 83.3 j)ei" cent. 



From this it is (|nite jdain that we cannot ai-ri\-e at the (lelei-minatioii 

 of the atomic weight of antimony by the electrolysis of solntions of 

 antimony trichloride and that the valnes fonnd by Poppkr, to which 

 ill the calculation of the atomic weight is attached the same value as 

 to those of SciiNKiDKK, (\)()KK, and l)0\(rAKTz'), are (|nile accidental, being 

 (le[»endent on the concentration of the solntions employefl. 



It further ap[»ears from the abo\-e that uidviiown electrolytic or 

 chemical changes j)lay a part here which reipiii-e fiirtluM- inx'estigation 

 and which may l)e expected to adil to our know ledge of the formation 

 and composition of the remarkable explosive antimony. 



We hope, shortly, to imestigate these changes. 



1) Cloinparc Ostwaf-d. Lcliil)ii(li drr allgemeiiR'n (Ihi'iiiic 1, u,\ (iS'.tl). 



