1. A method has been revived which enables the connective tissue factor in wound healing to be studied quantitatively. 2. It has been found that the functional value of connective tissue formed in response to traumatism as represented by its tensile strength varies widely in different animals. 3. It is suggested that the method may find application in the study of extraneous influences which may affect wound healing either through local or systemic application. 4. It has been determined that there is no parallelism between an active connective tissue response to traumatism and natural resistance to inoculation tuberculosis in the rabbit.