We started to construct the machine. Meanwhile, Mr. Erickson told me he had developed a new strain of bacteria which was much more hardy and 160 degrees at 80% humidity would not kill the thing. So we constructed our machine to run a temperature of 180 at 70% humidity for 30 minutes, and that will kill them. Now, in 15 minutes I can't give you anywhere near all the details of construction of that machine. I can give you a few of the principles. On the outside, of course, is a well insulated box. The nuts are fed through the top with a revolving drum with fins on it. They comes down to a belt that travels this way for six feet, drops to another, travels back, a series of five belts. It takes them just half an hour to go through. The layer of nuts is perhaps three-eighths of an inch thick. The temperature is kept up with electric coils. It is regulated with a thermostat. We had some difficulty with the humidity. Try it and see. As we raised our temperature it was hard to keep our humidity up. Finally we went back to the simplest thing, which usually works. We just took a pan of water, with a solenoid valve and float such as you have in the modern hot air furnaces and put a magnetic switch on it. As the water boiled it helped raise the temperature, and it gave off vapors. The automatic switch and the wet and dry bulb from the thermometer and thermostat will shut the water off and shut the heat off automatically when you get the required temperature and the required humidity. In that machine our nuts start at the top, take 30 minutes to travel through. From the time they start at the top until the time they get to the bottom they have a standard temperature of 180 deg. plus the 70% humidity. Then the second problem, if you want to make one, is to get that temperature standard in all places. I know one man who made one of these machines and put four fans in at different places, and when he closed it up and got it to working, the center of his machine was still cold, because your hot air acts differently from free air. We put at the bottom a shelf with a tube in it and a big fan in the middle. The air is drawn down from the top here, driven through there, hits some baffles and comes across each belt. In that way it works. Now, if you want, any of you, to get the details of the pasteurizer you could write to Mr. Erickson, College of Forestry, University of Washington, Seattle 5, and he who designed it would be very glad, I believe, to help with your problems, or you could write up to our Agricultural Engineering department, and they would do the same.