CHAPTER 1. THE MASON-BEES.

CHAPTER 2. EXPERIMENTS.

CHAPTER 3. EXCHANGING THE NESTS.

CHAPTER 4. MORE ENQUIRIES INTO MASON-BEES.

CHAPTER 5. THE STORY OF MY CATS.

CHAPTER 6. THE RED ANTS.

CHAPTER 7. SOME REFLECTIONS UPON INSECT PSYCHOLOGY.

CHAPTER 8. PARASITES.

CHAPTER 9. THE THEORY OF PARASITISM.

CHAPTER 10. THE TRIBULATIONS OF THE MASON-BEE.

CHAPTER 11. THE LEUCOPSES.

INDEX.




CHAPTER 1. THE MASON-BEES.

Reaumur (Rene Antoine Ferchault de Reaumur (1683-1757), inventor of