Letters of Junius. In 1871 was published a book entitled The Handwriting of Junius Professionally Investigated by Mr. Charles Chabot, expert. The object of this book is to prove that Sir Philip Francis was the author of these letters. On the 22nd May, 1871, appeared an article in the Times to show that the case is “not proven” by Mr. Chabot. Mr. Pitt told Lord Aberdeen that he knew who wrote the Junius Letters, and that it was not Francis. Lady Grenville sent a letter to the editor of Diaries of a Lady of Quality to the same effect.