his expression. The next moment he drew Mr. Bernard aside, saying: “I want to ask you whether the bed in Victoria Ward, occupied by this man whose fever has turned to typhus, is the same bed, or near the bed which—” The rest of the sentence was lost to me as they walked away.
After talking together in whispers for a few moments, they rejoined me. Mr. Bernard was explaining the different theories of infection to Ralph.
“ My notion,” he said, “is, that infection is taken through the lungs; one breath inhaled from the infected atmosphere hanging immediately around the diseased person, and generally extending about a foot from him, being enough to communicate his malady to the breather—provided there exists, at the time, in the individual exposed to catch the malady, a constitutional predisposition to infection. This predisposition we know to be greatly increased by mental agitation, or bodily weakness; but, in the case we have been talking of,” (he looked at me,) “the chances of infection or non-infection may be equally balanced. At any rate, I can predict nothing about them at this stage of the discovery.”