one not too extensive, but which, nevertheless, contains nearly every variety of soil and surface, that can be found in a much larger circuit. Some plants are marked as more common within the smaller distance than in the larger. As the larger district contains the smaller, it is obvious that the numerical number of specimens cannot be less, but must be more, unless the species be entirely confined to the smaller circuit. The proportional frequency, however, may be greater within the smaller distance, and, therefore, so marking the species does not involve a contradiction as might at first sight appear.
I have in all cases, for the sake of more easy reference, adopted the same generic names as those of the Edinburgh list, without regard to any difference of my own opinion. I have not however observed this rule with respect to species and varieties, with regard to which I have used my own judgment.
