page 258, column2, Table 1 The color ofCoCla.3NHs is bluish green hut hemmes violet by aquation [Kauffmsn, G. 8.. P e m n s l Communication, 19811.
page 259, column 1,paragraph 3, line 6, should read:
...beginning in 1939.
page 260, column 1,paragraph 3, line 20 The EDTA ion ha8 acharge 01-4.
page 260, columns 1 and 2, under "Formulas and Nomenclature of Com~lexes"
1. Tho order for citing ligsnds in names is noualphahefieal.
1034
Journal of Chemical Education
2. Theligaid " m e for wateriiiqua. 3. Theligsnd name for HS- ismercapta. Hence, the n p e s for [CaCI(NH3ldCh and [AI(OH)lH20)s12+ given in this article should be pentsamminachlorambaIt(lll1chloride and pontasqushydroroaiuminum ion.reapectiveiy.
page 261, column 1,paragraph 1,line 13,under "Chelates in Medicine" The EDTA ion hsa aeherge of 4.
page 261, column 1 , line 5, under "Complexing in Natural Systems," should read: These complexes, the porphyrim and corriw, are baaed.. . .. .
page 261, column 2, last paragraph, line 2, under "Complexing in Natural Systems," should read:
