CONTENTS.

TRANSLATOR'S PREFACE

LETTER I. ON THE IMPREGNATION OF THE QUEEN BEE.

LETTER II. SEQUEL OF OBSERVATIONS ON THE IMPREGNATION OF THE QUEEN BEE.

LETTER III. THE SAME SUBJECT CONTINUED.—OBSERVATIONS ON RETARDING THE FECUNDATION OF QUEENS.

LETTER IV. ON M. SCHIRACH'S DISCOVERY.

LETTER V. EXPERIMENTS PROVING THAT THERE ARE SOMETIMES COMMON BEES WHICH LAY FERTILE EGGS.

LETTER VI. ON THE COMBATS OF QUEENS: THE MASSACRE OF THE MALES: AND WHAT SUCCEEDS IN A HIVE WHERE A STRANGER QUEEN IS SUBSTITUTED FOR THE NATURAL ONE.

LETTER VII. SEQUEL OF EXPERIMENTS ON THE RECEPTION OF A STRANGER QUEEN. M. DE REAUMUR'S OBSERVATIONS ON THE SUBJECT.

LETTER VIII. IS THE QUEEN OVIPAROUS? WHAT INFLUENCE HAS THE SIZE OF THE CELLS, WHERE THE EGGS ARE DEPOSITED, ON THE BEES PRODUCED?—RESEARCHES ON THE MODE OF SPINNING THE COCCOONS.

LETTER IX. ON THE FORMATION OF SWARMS.

LETTER X. THE SAME SUBJECT CONTINUED.

LETTER XI. THE SAME SUBJECT CONTINUED.

LETTER XII. ADDITIONAL OBSERVATIONS ON QUEENS THAT LAY ONLY THE EGGS OF DRONES, AND ON THOSE DEPRIVED OF THE ANTENNÆ.

LETTER XIII. ECONOMICAL CONSIDERATIONS ON BEES.

APPENDIX.

ANALYTICAL INDEX.