The Professor has a strongly humorous side, and I could from old knowledge detect a trace of its origin in his answer.
“My young sir, I do not ask so much as that, not the last!”
“What shall I do?” There was fire in his eyes, and his open nostrils quivered with intent. Van Helsing slapped him on the shoulder.
“Come!” he said. “You are a man, and it is a man we want. You are better than me, better than my friend John.” Arthur looked bewildered, and the Professor went on by explaining in a kindly way.
“Young miss is bad, very bad. She wants blood, and blood she must have or die. My friend John and I have consulted, and we are about to perform what we call transfusion