Some of my new types are stouter and others weaker than their parents, as shown by _gigas_ and _albida_. Some have broader leaves and some narrower, _lata_ and _oblonga_. Some have larger flowers (_gigas_) or deeper yellow ones (_rubrinervis_), or smaller blossoms (_scintillans_), or of a paler hue (_albida_). In some the capsules are longer (_rubrinervis_), or thicker (_gigas_), or more rounded (_lata_), or small (_oblonga_), and nearly destitute of seeds (_brevistylis_). The unevenness of the surface of the leaves may increase as in _lata_, or decrease as in _laevifolia_. The tendency to become annual prevails in _rubrinervis_, but _gigas_ tends to become [574] biennial. Some are rich in pollen, while _scintillans_ is poor. Some have large seeds, others small. _Lata_ has become pistillate, while _brevistylis_ has nearly lost the faculty to produce seeds. Some undescribed forms were quite sterile, and some I observed which produced no flowers at all. From this statement it may be seen that nearly all qualities vary in opposite directions and that our group of mutants affords wide material for the sifting process of natural selection. On the original field the _laevifolia_ and _brevistylis_ have held their own during sixteen years and probably more, without, however, being able to increase their numbers to any noticeable extent. Others perish as soon as they make their appearance, or a few individuals are allowed to bloom, but probably leave no progeny. But perhaps the circumstances may change, or the whole strain may be dispersed and spread to new localities with different conditions. Some of the latter might be found to be favorable to the robust _gigas_, or to _rubrinervis_, which requires a drier air, with rainfall in the springtime and sunshine during the summer. It would be worth while to see whether the climate of California, where neither _O. lamarckiana_ nor _O. biennis_ are found wild, would not exactly [575] suit the requirements of the new species _rubrinervis_ and _gigas_.