Variations in spelling and hyphenation remain as in the original.
Ellipses match the original.
Page 340 is blank in the original.
The following corrections have been made to the original text:
Page 152: publication is greatly lowered.[original has a comma]
Page 172: the Rome of the seventeenth[original has "seventeeth">[ century
Page 321: the staunch[original has "stanch">[ persistence with which
Page 341: Bible, the foundation of the system of classification[original has "classifiation">[ adopted