V. Certes. 359 ; Haushofer, 519 ; Helwig,

522 ; Klement, 578 ; Lehmann, 613 ; Macdonald, 644 ; Poulsen, 750 ; Ras- pail, 761; Rzehak, 792 ; Schmidt, 810; Storch, 856 ; Wormley, 934. Military Service, Chemistry for.