From the "CAPITALS" INTRODUCTION:

A capital letter is a letter of formal shape. Capitals were originally derived from the stiff and angular letters used in formal inscriptions. Originally all writing was done in capitals. Later the scribes devised less formal shapes for the letters, making use of lines more easily made by brush or pen on papyrus, parchment, or paper. The capitals were retained for certain uses but the less formal shapes were employed to do the greater part of the work. These less formal letters have been known by several names. They will be referred to here by that under which they are known to modern printers, “lower-case.”

A further modification of the letter came with the introduction of the sloping, or italic letter. This received its name from its place of origin, Italy. It was introduced by Nicholas Jenson, a printer of Venice, and was an imitation of the handwriting of the Italian poet Petrarch. Originally it was used only for the lower-case and was combined with the older form of capital letters, called roman, also from the place of its origin. Later the italic characteristics were given to capitals as well as lower-case letters.

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From the 'DIVISIONS OF WORDS" PREFACE:

The principal purpose of this book is to give in brief form the rules and usages governing the division of words when the measure will not permit ending the word and the line together. This matter is considered in its relation to good spacing and to the legibility of the printed page.

Leading up to the discussion will be found some consideration of spelling, the formation of syllables, pronunciation, and accent. This consideration is necessarily brief, and no attempt has been made to give the rules for spelling which are so frequently found in spelling books, or any of them. In the writer's opinion such rules are of very little practical value. Good spelling is not so much the result of remembering and applying rules as it is of observation, practice, and memory. The lists of certain types of troublesome words may be found useful for ready reference.