At this moment the usher's voice was heard calling out the name of the first witness for the defence.
"Edmund Horford Rowe!"
A keen-looking, grey-haired man, with a shaven face and close-cut side-whiskers, stepped into the box and was sworn in due form.
"You are a doctor of medicine, I believe," said Anstey, addressing the witness, "and lecturer on Medical Jurisprudence at the South London Hospital?"
"I am."
"Have you had occasion to study the properties of blood?"
"Yes. The properties of blood are of great importance from a medico-legal point of view."
"Can you tell us what happens when a drop of blood—say from a cut finger—falls upon a surface such as the bottom of an iron safe?"
"A drop of blood from a living body falling upon any non-absorbent surface will, in the course of a few minutes, solidify into a jelly which will, at first, have the same bulk and colour as the liquid blood."
"Will it undergo any further change?"