While my husband and Mr. Henley were engaged in writing plays in Bournemouth they made a number of titles, hoping to use them in the future. Dramatic composition was not what my husband preferred, but the torrent of Mr. Henley’s enthusiasm swept him off his feet. However, after several plays had been finished, and his health seriously impaired by his endeavours to keep up with Mr. Henley, play writing was abandoned forever, and my husband returned to his legitimate vocation. Having added one of the titles, The Hanging Judge, to the list of projected plays, now thrown aside, and emboldened by my husband’s offer to give me any help needed, I concluded to try and write it myself.

As I wanted a trial scene in the Old Bailey, I chose the period of 1700 for my purpose; but being shamefully ignorant of my subject, and my husband confessing to little more knowledge than I possessed, a London bookseller was commissioned to send us everything he could procure bearing on Old Bailey trials. A great package came in response to our order, and very soon we were both absorbed, not so much in the trials as in following the brilliant career of a Mr. Garrow, who appeared as counsel in many of the cases. We sent for more books, and yet more, still intent on Mr. Mr Garrow, whose subtle cross–examination of witnesses and masterly, if sometimes startling, methods of arriving at the truth seemed more thrilling to us than any novel.

Occasionally other trials than those of the Old Bailey would be included in the package of books we received from London; among these my husband found and read with avidity:—

My husband was always interested in this period of his country’s history, and had already the intention of writing a story that should turn on the Appin murder. The tale was to be of a boy, David Balfour, supposed to belong to my husband’s own family, who should travel in Scotland as though it were a foreign country, meeting with various adventures and misadventures by the way. From the trial of James Stewart my husband gleaned much valuable material for his novel, the most important being the character of Alan Breck. Aside from having described him as “smallish in stature,” my husband seems to have taken Alan Breck’s personal appearance, even to his clothing, from the book.

A letter from James Stewart to Mr. John Macfarlane, introduced as evidence in the trial, says: “There is one Alan Stewart, a distant friend of the late Ardshiel’s, who is in the French service, and came over in March last, as he said to some, in order to settle at home; to others, that he was to go soon back; and was, as I hear, the day that the murder was committed, seen not far from the place where it happened, and is not now to be seen; by which it is believed he was the actor. He is a desperate foolish fellow; and if he is guilty, came to the country for that very purpose. He is a tall, pock–pitted lad, very black hair, and wore a blue coat and metal buttons, an old red vest, and breeches of the same colour.” A second witness testified to having seen him wearing “a blue coat with silver buttons, a red waistcoat, black shag breeches, tartan hose, and a feathered hat, with a big coat, dun coloured,” a costume referred to by one of the counsel as “French cloathes which were remarkable.”

‘I have not,’ said the Provincial Mayor.

‘It is simply this. That Space, as our mathematicians have it, is spoken of as having three dimensions, which one may call Length, Breadth, and Thickness, and is always definable by reference to three planes, each at right angles to the others. But some philosophical people have been asking why THREE dimensions particularly—why not another direction at right angles to the other three?—and have even tried to construct a Four-Dimension geometry. Professor Simon Newcomb was expounding this to the New York Mathematical Society only a month or so ago. You know how on a flat surface, which has only two dimensions, we can represent a figure of a three-dimensional solid, and similarly they think that by models of thee dimensions they could represent one of four—if they could master the perspective of the thing. See?’

‘I think so,’ murmured the Provincial Mayor; and, knitting his brows, he lapsed into an introspective state, his lips moving as one who repeats mystic words. ‘Yes, I think I see it now,’ he said after some time, brightening in a quite transitory manner.

‘Well, I do not mind telling you I have been at work upon this geometry of Four Dimensions for some time. Some of my results are curious. For instance, here is a portrait of a man at eight years old, another at fifteen, another at seventeen, another at twenty-three, and so on. All these are evidently sections, as it were, Three-Dimensional representations of his Four-Dimensioned being, which is a fixed and unalterable thing.

‘Scientific people,’ proceeded the Time Traveller, after the pause required for the proper assimilation of this, ‘know very well that Time is only a kind of Space. Here is a popular scientific diagram, a weather record. This line I trace with my finger shows the movement of the barometer. Yesterday it was so high, yesterday night it fell, then this morning it rose again, and so gently upward to here. Surely the mercury did not trace this line in any of the dimensions of Space generally recognized? But certainly it traced such a line, and that line, therefore, we must conclude was along the Time-Dimension.’

‘But,’ said the Medical Man, staring hard at a coal in the fire, ‘if Time is really only a fourth dimension of Space, why is it, and why has it always been, regarded as something different? And why cannot we move in Time as we move about in the other dimensions of Space?’

The Time Traveller smiled. ‘Are you sure we can move freely in Space? Right and left we can go, backward and forward freely enough, and men always have done so. I admit we move freely in two dimensions. But how about up and down? Gravitation limits us there.’

‘Not exactly,’ said the Medical Man. ‘There are balloons.’

‘But before the balloons, save for spasmodic jumping and the inequalities of the surface, man had no freedom of vertical movement.’ ‘Still they could move a little up and down,’ said the Medical Man.