 One of the components we were just talking about was looking at aggregate stability, how water stable those aggregates actually are, and within this demonstration what we did is we actually filled up water within the jars that we were talking about. Again, you can see the screens are submerged within each jar, and what we're actually going to do is place two clods, of course one is a conventionally tilled and one is a no-till clod, and demonstrate the difference between having something that's very water stable and something that has a very poor aggregate stability, and typically when you look at this from any standpoint, this is a conventionally tilled clod, you can see that there are no pores in the no-till clod, you can actually see there's actually wormholes within the clod itself, and that's something that we want to look at, but the other thing that you need to keep in mind is as you pick out and use a clod from a conventionally tilled field, the question is, is this clod actually from the soil matrix itself, or is it from a, or developed from compaction, and that's not going to actually work very well within this demonstration, and those cohesive forces by smashing the pore space out is actually going to look as though it has good aggregate stability, and that's really not something we want to demonstrate. So anyway, what the demonstration goes like this, the no-till clod, some of the things that you actually, you'll look at very quickly here, is that we're going to be moving water into the clod itself, air will actually come out, of course, we've talked about this before, there's a lot of pore space, about half of this, the soil matrix is pore space, so as we immerse that clod, you can actually see that the bubble's actually coming up, that water actually coming up, or that water rushing in, the air coming out, and then we'll immerse our conventionally tilled clod also, and in both cases we're actually looking at this thing, we're actually seeing soil particles fall off, however the question is, is to what extent are we actually talking about the clods actually falling apart, and how cohesive that actually is over time. So let's just look at this demonstration and follow it through here. Okay, after we've let this sit for a while, you can actually see that there's some differences in clarity associated with two samples, typically if we start really looking at good samples for a collection, is when you look at their conventionally tilled samples, if you have samples that were recently broke out of sod, etc., they really won't show this demonstration very well, so what we want to do is collect samples that have been conventionally tilled for a long period of time, so that we can actually look at those that have poor aggregate stability. Again, as you start looking at that aggregate stability that the issues associated with it will end up with clarity differences within our samples, in many cases you're going to have to let this run for a few minutes before you actually really start to see some of those differences. Again, picking out your samples is really important within this demonstration. One of the other components of the model we're actually talking about is looking at capillary action through soils, and the demonstration that we actually have, as I mentioned before, is we have a bulletin holder, a piece of plastic, with a paper towel in it. We're going to actually look at, of course, water movement upward, in other words, against gravity associated with this paper towel, as a demonstration. Again, as I mentioned before, you can actually submerge it either as it is or you can put food coloring just to make it show up better within the demonstration. We're going to do that, put a few drops in, mix it up a little bit, and as you can imagine, water is going to move up the paper towel as we demonstrate and talk about capillary activity. We've let this sit a few minutes and you can actually see the amount of capillary activity we actually have now within this demonstration. Again, this demonstration we probably should let it go for a few minutes, so I would recommend we start it fairly early, and that way it gives us an opportunity to see capillary flow in action over time. We can do this with a paper towel or we can actually do this with a soil volume also and look at water moving up in that soil column.