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