Abstract: A method for supplementing magnesium in an animal by administering a stable complex of magnesium and aspartic acid having the formula MgCOOCH2CIINII2COO, which is highly soluble in water, to the animal. One form of the commercial product of the compound has the magnesium monoaspartate dissolved in water. Another form has the magnesium monoaspartate added to a food.

Abstract: A stable complex of calcium and aspartic acid having the formula CaCOOCH2CHNH2COO, which is highly soluble both in water, making the compound beneficial as a dietary supplement for calcium. One form of the commercial product of the compound has the calcium monoaspartate dissolved in water.

Abstract: A hydrochloride salt of ferrous bisglycinate having the formula Fe(C2H4NO2.HCl)2, which is highly soluble in water, making the compound beneficial as a dietary supplement. One form of the commercial product of the compound has the ferrous bisglycinate hydrochloride dissolved in water.

Abstract: A stop-motion mechanism utilizes rotational means for rotating a shaft having a thread with an alternating series of helical portions and arc portions. A follower is mounted for motion having a longitudinal component, and is adapted to engage the thread formed on the rotatable shaft. When the shaft is rotated, the follower thus moves in an intermittent fashion which is characterized by alternating periods of motion having a longitudinal component and pauses in motion.