Plate I. Honey bees 16 II. Digestive system of bee 22 III. Alfalfa (_Medicago saliva_) 64 IV. Esparcet or sainfoin (_Onobrychis sativa_) 64 V. Sweet clover or melilot (_Melilotus alba_) 64 VI. Acacia (_Acacia constricta_) 64 VII. Mesquite (_Prosopis juliflora_) 64 VIII. Blue weed or viper's bugloss (_Echium vulgare_) 64 IX. Crimson clover (_Trifolium incarnatum_) 64 X. Alsike clover (_Trifolium hybridum_) 64 XI. _Bacillus alvei_ 112 TEXT FIGURES. Fig. 1. Worker cells of common East Indian honey bee (_Apis indica_) 12 2. Worker cells of tiny East Indian honey bee (_Apis florea_) 13 3. Comb of tiny East Indian honeybee (_Apis florea_) 14 4. Worker cells of common honey bee (_Apis mellifera_) 15 5. Ovaries of queen and workers 19 6. Heads of queen and drone 20 7. Modifications of the legs of different bees 21 8. Head and tongue of _Apis mellifera_ worker 22 9. Wax disks of social bees 26 10. Comb building, side of hive removed 27 11. Cross section of brood apartment 29 12. Use of veil and bee smoker 31 13. Manipulation removing comb from hive 32 14. Manipulation tilting to bring reverse side of comb to view 33 15. Manipulation reverse side of comb brought to view 33 16. Manipulation examining reverse side of comb 33 17. Quinby closed-end frames 34 18. Box hive prepared for transportation 37 19. Frame hive prepared for transportation 37 20. An apiary in Florida 38 21. An apiary in California 39 22. Ancient Greek movable comb hive 41 23. Dadant-Quinby form of Langstroth hive with cap and gable roof 41 24. Langstroth frame showing construction 42 25. Form in which to nail frames 42 26. Lock-joint chaff hive 43 27. Manner of nailing hives 43 28. Section of improved tin frame-rest 44 29. The Langstroth hive (Dadant-Quinby form), cross