A grinding machine has a machine bed, a first spool and a second spool mounted on the machine bed. One example apparatus includes an implantable stimulating electrode that provides an electrical stimulus to fiber tracts of the hippocampal commissure of the brain of a subject. The invention further relates to hybrid soybean seeds and plants produced by crossing the cultivar SN71173 with another soybean cultivar. The biasing circuit and the mirror circuit have a charging state and a high impedance state. The external surface of the first stage member is provided with axially-spaced circumferential raised areas or rings that engage the internal surface of the disk stack annulus to prevent axial flow along the exterior surface of the sleeve. Through web site requests for geographic information, a central database tracks an Internet user’s traffic on the Internet whereby a profile can be generated.