I have added a new file to my Cavendish page: Philosophical Letters, 1.1-29 (pdf). This is a modernized version of the early part of Margaret Cavendish’s 1664 Philosophical Letters: the front matter, and the first 29 letters in part 1. Most of those letters (4-29) discuss the work of Thomas Hobbes. The text has been modernized in its spelling, use of capital letters, and use of italics. Few changes have been made to Cavendish’s punctuation, the main one being to add apostrophes indicating possession.