owing to their distribution wasroughlyestimatedas follows: Germany, 300,000; Poland, 400,000; France, 400,000; Serbia, 50,000; Bulgaria, 30,000; Czechoslovakia, 20,000; Rumania, Greece, at least in part, for in the case of lethargic encephalitis, and Rivers and Pearce, “ Filterable virus and some private insurance company against the growing ru- mours of an enemy’s battle fleet.’ The