CHAPTER XXVII.
I.
His work began fumblingly. There were days when, for all the joy of it, he dreaded lest Tubbs stride in and bellow, "What are you doing here? You're the wrong Arrowsmith! Get out!"
He had isolated twenty strains of staphylococcus germs and he was testing them to discover which of them was most active in producing a hemolytic, a blood-disintegrating toxin, so that he might produce an antitoxin.
There were picturesque moments when, after centrifuging, the organisms lay in coiling cloudy masses at the bottoms of the tubes; or when the red corpuscles were completely dissolved and the opaque brick-red liquid turned to the color of pale wine. But most of the processes were incomparably tedious: removing samples of the culture every six hours, making salt suspensions of corp
