The famous inventor in the field of beekeeping Dadan Charles was born in France in 1817. In 1863 his family emigrated to America. Throughout his life he studied design Dadan other inventors such as Langstroth, James Kwibi Moses and others. Dadan and spent his calculations, so it is, for example, calculated that the young queen can lay out a day to three thousand eggs. He calculated that in order to fill hundreds of honey bees must be about 1600 cells per day. So he realized that the hive must be twelve Kvin