Note 86 — Chapter VIII
Reading edition
Saporata, "Ancienne Vegetation Polaire"; Hooker, Presidential Address to Royal Society, 1878; Thistleton Dyer, "Lecture on Plant Distribution "; Mr. Starkie Gardner, Letters in Nature, 1878, etc. The basis of most of these brochures is to be found in Heer's "Flora Fossilis Arctica."