Volume 10, Bulletins 122-132. (122) International Trade in Pork and Pork Products; (123) Proteolysis by Streptococcus Lactis with Special Reference to Butter Cultures and Butter; (124) Infection Studies of Diplodia zeae (Schw.) Lev. And Control of Seedling Blights of Corn; (125) Biology of the Four-Lined Borer Luperina Stipata (Morr.); (126) Production of Artificial Farm Manures; (127) Effects of Artificial Farm Manures on Soils and Crops; (129(8)) Factors Influencing Egg Production: II. The Influence of the Date of First Egg Upon Maturity and Production; (129) Long Term Loans of Iowa Banks; (130) Effect of Delayed Harvest Upon Yield of Grain; (131) Acidity Change Associated with the Keeping Quality of Apples Under Various Storage Conditions; (132) Microbiological Studies of Some Typical Iowa Soil Profiles