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", "Testimonials", and "Maple Lawn Apiary". Many vintage books such as this are becoming increasingly scarce and expensive. We are republishing this book now in an affordable, modern, high-quality edition complete with a specially commissioned new introduction on Bee-keeping.