P. 22, 1. 14 from bottom, and p. 24, line 17 from top, for "longioribus," read superantibus."-P. 64, line 16 from top, for "bright," read "light."—P. 74, line
5 from top, for "Class II," read "Class 1."-P. 114, after note at bottom, insert EDS.
P. 28, 1. 16 from top, for "one hundred and twenty," read "twenty."
P. 93, 1. 2 from bottom, for "practical relation," read "particular reaction." P. 95, 1. 17 from top, insert "the" before "action."
read first formula "O" for " O2."
for "these," read "their."
P. 97, 1. 15 from bottom, for " CH2O," read "CH4O.”
P. 99, Note, 1. 2 from bottom, for "copsic" read "
P. 100, 1. 9 from top, for "formies," read" formic."
P. 177, 1. 7
P. 177, 1. 13
P. 177, 1. 17
P. 177, 1.
("2+0)-0=1," read "2+0−1=1."
"acids are often found," read" acid are often formed."
"heat," read "treat."
2 from bottom, for " C6 (NHO2)3=0," read C6 (NHO2)30.
7 from bottom, insert " "before" compound."
5 from top, for "hydride," read " anhydride."
P. 178, 1.
P. 180, 1.
P. 180, 1.
P. 181, 1.
P. 181, I. 14
P. 181, 1. 18
for "sulphamephylane," read "sulphamethylane."
P. 181, 1. 18 from bottom, after similarity, insert “a.”
P. 182, 1. 1, after derivatives, insert "of."
P. 182, 1. 10 from top, insert "this" before "ether."
P. 184, dele from "Urea" in 4th line to "artificially" in the 6th.
P. 184, 1. 10 from top, for "acesenic," read "arsenic."
Vol. iii, p. 295, in the formula of pyroxyline, dele 8HO.