Happy Birthday Rev. L. L. Langstroth! If you didn't know, in 1851 he pioneered the use of Bee-Space and designed the movable frame hive commonly used in North America today. In 1853 his book, The Hive and the Honey Bee, was the first detailed writing of honey bee management techniques. 150 years later his book is still considered by many to bee THE book of modern beekeeping.