1. The composite nature of a pure culture of a virulent pneumococcus;AM;Jour. Exp. Med.,1925
2. Electrophoretic potential and virulence of pneumococci (Types 1, 2, 3 and 4);FALK I. S.;Jour. Inf. Dis.,1925
3. Electrophoretic potential, virulence and serum agglutination with single cell cultures of variants of type I pneumococci;FALK I. S.;Ibid.,1925
4. Electrophoretic potential, acid and serum agglutination of pneumococci;FALK I. S.;Ibid.,1926
5. The electrophoretic potentials, the dissolution and the serum agglutination of pneumococci in thepresence of sodium oleate;FALK I. S.;Ibid.,1926