490 



E R R A T ü M. 



In the paper on canonical elements bj Pi'of. W. ük vSitteh in tlie 

 Proceedings for September: 



pages 290 — 291: From page 290 line 19: 'Jji tlic same way....'' 

 to page 291 line 21: "We then have" 



should be inserted on page 289 between the lines 19 and 20. after 

 ". . . already quoted". 



