"He has all along, since his coming, been trying his power, slowly but surely; that big child-brain of his is working. Well for us, it is, as yet, a child-brain; for had he dared, at the first, to attempt certain things he would long ago have been beyond our power. However, he means to succeed, and a man who has centuries before him can afford to wait and to go slow. _Festina lente_ may well be his motto."

"I fail to understand," said Harker wearily. "Oh, do be more plain to me! Perhaps grief and trouble are dulling my brain."

The Professor laid his hand tenderly on his shoulder as he spoke:--

"Ah, my child, I will be plain. Do you not see how, of late, this monster has been creeping into knowledge experimentally. How he has been making use of the zoöphagous patient to effect his entry into friend John's home; for your Vampire, though in all afterwards he can come when and how he will, must at the first make entry only when asked thereto by an inmate. But these are not his most important experiments. Do we not see how at the first all these so great boxes were moved by others. He knew not then but that must be so. But all the time that so great child-brain of his was growing, and he began to consider whether he might not himself move the box. So he began to help; and then, when he found that this be all-right, he try to move them all alone. And so he progress, and he scatter these graves of him; and none but he know where they are hidden. He may have intend to bury them deep in the ground. So that he only use them in the night, or at such time as he can change his form, they do him equal well; and none may know these are his hiding-place! But, my child, do not despair; this knowledge come to him just too late! Already all of his lairs but one be sterilise as for him; and before the sunset this shall be so. Then he have no place where he can move and hide. I delayed this morning that so we might be sure. Is there not more at stake for us than for him? Then why we not be even more careful than him? By my clock it is one hour and already, if all be well, friend Arthur and Quincey are on their way to us. To-day is our day, and we must go sure, if slow, and lose no chance. See! there are five of us when those absent ones return."

Whilst he was speaking we were startled by a knock at the hall door, the double postman's knock of the telegraph boy. We all moved out to the hall with one impulse, and Van Helsing, holding up his hand to us to keep silence, stepped to the door and opened it. The boy handed in a despatch. The Professor closed the door again, and, after looking at the direction, opened it and read aloud.

"Look out for D. He has just now, 12:45, come from Carfax hurriedly and hastened towards the South. He seems to be going the round and may want to see you: Mina."

There was a pause, broken by Jonathan Harker's voice:--