In a particularly advantageous embodiment of the invention, a bottle shaped reservoir is hingably connected to the trough at a location thereon which allows the bottle and {TAIL ~ trough} to be connectively hinged apart from their nesting position, to one in which the trough is relatively horizontal, and the reservoir in a position to permit at least partial emptying of the liquid contents of {HEAD ~ the reservoir} into the trough 
In a particularly advantageous embodiment of the invention , a bottle shaped reservoir is hingably connected to the trough at a location thereon which allows the bottle and { TAIL ~ trough } to be connectively hinged apart from their nesting position , to one in which the trough is relatively horizontal , and the reservoir in a position to permit at least partial emptying of the liquid contents of { HEAD ~ the reservoir } into the trough
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH