The writing of the book was due more to accident than to design. I was bent on becoming a dramatist, but, being quite unknown, I found it impossible to induce the managers of the Melbourne Theatres to accept, or even to read a play. At length it occurred to me I might further my purpose by writing a novel. I should at all events secure a certain amount of local attention. Up to that time I had written only one or two short stories, and the "Cab" was not only the first book I ever published, but the first book I ever wrote; so to youth and lack of experience must be ascribed whatever was wanting in the book. I repeat that the story was written only to attract local attention, and no one was more astonished than I when it passed beyond the narrow circle for which it had originally been intended. My mind made up on this point, I enquired of a leading Melbourne bookseller what style of book he sold most of. He replied that the detective stories of Gaboriau had a large sale; and as, at this time, I had never even heard of this author, I bought all his works--eleven or thereabouts--and read them carefully. The style of these stories attracted me, and I determined to write a book of the same class; containing a mystery, a murder, and a description of low life in Melbourne. This was the origin of the "Cab." The central idea i.e. the murder in a cab--came to me while driving at a late hour to St. Kilda, a suburb of Melbourne; but it took some time and much thought to work it out to a logical conclusion. I was two months sketching out the skeleton of the novel, but even so, when I had written it, the result proved unsatisfactory, for I found I had not sufficiently well concealed the mystery upon which the whole interest of the book depended. In the first draft I made Frettlby the criminal, but on reading over the M.S. I found that his guilt was so obvious that I wrote out the story for a second time, introducing the character of Moreland as a scape-goat. Mother Guttersnipe I unearthed in the slums off Little Bourke Street; and I gave what I am afraid was perhaps too vivid a picture of her language and personality. These I have toned down in the present edition. Calton and the two lodging-house keepers were actual personages whom I knew very well, and I do not think I have exaggerated their idiosyncracies, although many have, I believe, doubted the existence of such oddities. All the scenes in the book, especially the slums, are described from personal observation; and I passed a great many nights in Little Bourke Street, gathering material.