PREFACE.
C HAPTER I. INTRODUCTORY.
OF BERE.
C HAPTER II.
C HAPTER III.
C HAPTER IV.
C HAPTER V.
C HAPTER VI.
C HAPTER VII.
C HAPTER VIII.
C HAPTER IX.
C HAPTER X.
C HAPTER XI.
C HAPTER XII.
C HAPTER XIII.
C HAPTER XIV.
C HAPTER XV.
APPENDIX. PASTEUR’S DISCOVERIES.
INDEX.