Preferably, {TAIL ~ a short timing period device} is incorporated electrically intermediate the time clock and the pump to permit control of each dosage cycle to a matter of a predetermined number of seconds even if {HEAD ~ the time clock} is incapable of such fine control 
Preferably , { TAIL ~ a short timing period device } is incorporated electrically intermediate the time clock and the pump to permit control of each dosage cycle to a matter of a predetermined number of seconds even if { HEAD ~ the time clock } is incapable of such fine control
OTH OTH TAIL TAIL TAIL TAIL 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH