The intercellular substances of bone marrow. I. Preliminary studies of the physical and chemical character of the intercellular bone marrow substances in normal rabbits.

M UCH of the knowledge of mammalian bone marrow has come from classic histologic stu(ly and is limited to the identification of the cell types present. By 1880, largely through the application of Ehrlich’s staining techniques, numerous students recognized the bone marrow as the source of certam peripheral blood cells, and the problems of identity and classification of these elements have occupied hernatologists since that time. Serious and per-