...entirely upon the weight which different naturalists would attach to any given individual difference.2 Distinctions which appear to one observer as sufficiently...distinct species, by another are looked upon as simply of varietal value ; and, in the nature of the case, it seems impossible to lay down any definite rules....

...considered as merely 'varietal,' and at what exact point do these differences become of'specific ' value ? To this question no answer can be given; since...distinct species, by another are looked upon as simply of varietal value ; and, in the nature of the case, it seems impossible to lay down any definite rules....

..."specific" value? To this question no answer can be given, since it depends entirely upon the weight whieh different naturalists would attach to any given individual...distinct species, by another are looked upon as simply of varietal value; and, in the nature of the case, it seems impossible to lay down any definite rules....

...entirely upon the weight which different naturalists would attach to any given individual difference.1 Distinctions which appear to one observer as sufficiently...distinct species, by another are looked upon as simply of varietal value ; and, in the nature of the case, it seems impossible to lay down any definite rules....

...entirely upon the weight which different naturalists would attach to any given individual difference.2 Distinctions which appear to one observer as sufficiently...distinct species, by another are looked upon as simply of varietal value; and, in the nature of the case, it seems impossible to lay down any definite rules....