[66]

Perhaps at very beginning of Ch 4

Naturæ convenit, ut quo magis versus austrum procedamus, eo magis luxuriet vegetatio, et eo magis singulæ species in varietates dilabantúr, quæ demum formam magis fixam totidem specierum assumunt. Contra, quo magis ad septentrionem accedimus, eo etiam sibi invicem propiores fiunt hæ formæ, use que dum vel iterum omnino confluant, vel ut aberrantes, si ita dicam, formæ principali vel cardinali speciei se quasi submittant.                Ita species, fere ut gradus longitudinis globi terraquei, versus meridiem dilatantur vel multiplicantur, versus septentrionem vero contrahuntur vel pauciores fiunt." Wahly. Flora suecica, Vol 1, p. vi

Wahlg. Flora Suecica, Vol. 1, p. vi.

[See: Books Read / Books to be Read' notebook. CUL-DAR128.- "Wahlenberg Flora Suecica — most curious passage about species not varying in North. Wahlenberg, Göran. 1824-6. Flora Suecica. Upsalla."]

[66v]

Schleiden, on the other hand, speaks I remember of alpine plant being more variable than lowland. ─ H. C. Watson says alpine more numerous, than arctic, so that latter may be said to be a part of Arctic Alpine─

When Arctic regions existed at foot of Alps there was more arctic country, & therefore more species, which have reassured [illeg]

Herbert suspects that variation produced by staring produces more fixed varieties than luxuriance.─

Peacocks green Fowls, Donkeys not varying may be owing to want of favourable condition.

probably