<particles> 
  <particle name            = "Water Bubbles"
            texture         = "Particles/Bubble2.png"
            type            = "WaterBubble"
            num             = "10"
            speed           = "2."
            radius          = "8"
            fade_time_msec  = "500"
            direction       = "0. 1. 0."
            size            = "1.5"
            />
</particles>