She had not far to seek, for there in the bay-window was perched little Zeno, carefully picking the green leaves off a rose bough that he had been told to gather from his mother’s grave to take home to his father.  The whole stem was now bare but the white blossom at the end was untouched, and still beautiful.

She beckoned to the boy, and in a low voice bade him rouse his father and give him the rose from the churchyard; little Zeno obeyed and walked straight towards Melchior; opposite the sofa his courage failed him for a moment, but he took heart again and laying his little hand on the prematurely gray hair of the disheartened sage said, with all the sweet charm peculiar to a child when it speaks to comfort one who is its natural guardian and support: 

“Father, little Zeno brings you a rose.  It comes from the churchyard.  Mamma sent it to you with her love.”

The doctor, deeply touched, sat up suddenly, grasped the child’s hand that held out the rose to him and tried to draw the boy towards him in order to embrace him.  But Zeno, instead of answering the loving words addressed to him, struggled and cried out sharply, for the strong pressure of his father’s hand had driven a big thorn into his finger, and the blood from the wound was running down onto his light blue dress.

The doctor was distracted.  He had hurt the one creature for whose future greatness he had sacrificed his waning strength.

There flowed the blood of his son who had come as messenger from his wife On her he had lavished the one great love of his life and the white rose that she had sent him lay at his feet!

As his gaze fell upon the flower that she had loved better than all others, and then rested upon the crying child, a great tenderness filled his soul and for the first time he felt deep remorse that he had not dedicated his whole life to his love.  To devote the remainder of his time on earth, which he felt would be but short, to the child who stood there crying, seemed to him at that moment his holiest duty; yet the passion of the investigator within him could not be subdued, for as he looked about in search of a cloth to stanch the blood that flowed from the boy’s finger his eyes fell upon the bottle of elixir on the table, and then on the rose at his feet and the thought flashed across him that Bianca who had sent him the rose might have indicated to him by the hand of their offspring the substance which he needed to achieve the object of his life.

Of every element found in water or in air, in the earth or fire, he had added a portion to the elixir, save only the blood of a child.

Breathless he caught the hand of his son and held it over the phial, speaking coaxingly to him while drop after drop of the red life blood trickled into the elixir.