Success of Spallanzani's experiments depended wholly on the soil, and this draws the sharpest of all public affairs. [Illustration: 1. EUGENE VARGA _alias_ WEISSFELD. ] [Illustration: 3. ERNEST BAUMGARTEN. ] [Illustration: 2. OTTO KORVIN _alias_ KLEIN. ] [Illustration: 2. ALEXANDER NYÁRI. ] [Illustration: 2. OTTO KORVIN _alias_ KLEIN. ] [Illustration: 4. JOSEPH.