Volume 35, no. 12, p. 3269, column 2, line 9: “δ-nitrophenyl-β-d-galactopyranoside” should read “ortho-nitrophenyl-β-d-galactopyranoside.”
Page 3270, Table 1, row 13: “Citrobacter spp. 10” should read “Citrobacter genomospecies 10.”
Page 3271, Table 4, row 5: “Citrobacter spp. 10” should read “Citrobacter genomospecies 10.”
Page 3272, column 1, lines 7 and 9: “p-nitrophenyl-N-acetyl glucosamine” should read “p-nitrophenyl-N-acetyl glucosaminide.”