"Yes. In a few minutes more the jelly will begin to shrink and become more solid so that the blood will become separated into two parts, the solid and the liquid. The solid part will consist of a firm, tough jelly of a deep red colour, and the liquid part will consist of a pale yellow, clear, watery liquid."
"At the end, say, of two hours, what will be the condition of the drop of blood?"
"It will consist of a drop of clear, nearly colourless liquid, in the middle of which will be a small, tough, red clot."
"Supposing such a drop to be taken up on a piece of white paper, what would be its appearance?"
"The paper would be wetted by the colourless liquid, and the solid clot would probably adhere to the paper in a mass."
"Would the blood on the paper appear as a clear, red liquid?"
"Certainly not. The liquid would appear like water, and the clot would appear as a solid mass sticking to the paper."
"Does blood always behave in the way you have described?"
"Always, unless some artificial means are taken to prevent it from clotting."
"By what means can blood be prevented from clotting or solidifying?"