[135]

Feb 28 /53/ In a monster, ever so monstruous (give examples) we have no doubt of species, because we know have idea of parentage: so in sexual differences, let them be ever so great, so it sometimes happens that a form though widely suddenly, abnormally different, yet we have occult idea that it belongs, that it has affinity with group. — As in Alcippe & Cuscuta, though so different, yet some points of similarity, show this relationship. Now this occult idea, turns into plain parentage on my theory.—

3

11

[135v]

The wonderful diversities of sex & wonderful metamorphoses (give case of Ibla) are so far important, as they show form as form quite similar, as 1' larval stage, how by laws of growth they can become dissimilar.

The facts are of no other use. There is no analogy. But oft young larva can turn into male or female & old larval Ibla in the short duration of its life, we can at least see possibility of equal changes during successive generations