“…Direct Skin Test.-Most writers (Hill, 1939;Loveless, 1950;Miller, 1950;Rosenblum and Rosenblum, 1952;Collins-Williams, 1955;Tudor, 1956; Bachman and Dees, 1957) find this test of little value; positive results are not conclusive, and negative results do not rule out the diagnosis. If the test is of limited value in diagnosis, it gives even less help in choosing a substitute for cow's milk.…”