Roller Entrance Bottom Board Which Makes Bee-Keeping Pleasant and Profitable

This is a vintage article concerning "The Roller Entrance Bottom Board", a bee-hive modification that improves ventilation and helps prevent bees from swarming. This book is highly recommended for modern bee-keepers, and it would make for a useful addition to collections of related literature. Contents include: "For the Queen Breeder", "How to Operate the Entrance Bottom Board During Swarming Time...