The Graded Neutral Gel Technique (GNGT) of controlling the nucleation
was extended to the gel growth of crystals by a solubility reduction p
rocess. Successful and interesting results were obtained in five syste
ms, of the six tried. Attainment of morphological stability, growth ar
ound the axial region, and elimination of the growth of pseudo-structu
res and salting out effect were the salient features observed.