also areas of hemorrhagic alveoli.” Then he demonstrated for them an innovation he had experimented with: the wearing of gauze masks by patients with respiratory disease. Welch called the mask “a great thing . . . an important contribution in prevention of spray infections.” He encouraged Capps to write an article for the Journal of the American Medical Association and advised Pearce to conduct studies of the masks’ effectiveness. Cole agreed: “This is a very important matter in connection with the prevention of pneumonia.”
