ce Sais aaa aa ee 
Botany and Zoology. 281 
both cases, the permanent animals of the deep-sea bottom and the 
rmanent trees of the terrestrial forests have witnessed a more or 
dowed with the same means of dispersion, and confined to their 
original areas, were extinguished by the geological or climatologi- 
cal changes, and replaced by other races amongst which the per- 
manent ones had penetrated, or by new er abe from other 
areas; others, again, had spread like the permanent ones, but were 
h 
h Dr. 
type and species through ages, whilst "their ‘ade aie were 
e i fe tha 
oes 
not ‘been sufficient Foo of all and biological "aie g during its 
in the SS that we may be o be still living in the 
Cretaceous e chalk weet on has been going Hs over 
some part “ot ‘th North Atlantic sea-bed, from its first co e- 
its firs ne 
oe ae to the present day, in unbroken continuity and cunhatiied’’ in 
characte 
A portion of this address will probably astonish the vegetable 
pileousolesiege excepting perhaps, Mr. Lesquereux, whose cautious 
language, and his edna in this Journal that, properly speak- 
ing, no species can be established from leaves or mere fragments 
of leaves, are commen ‘a For the President of the Linnean 
Society avows himself wholly skeptical as to the “ New ‘Holland 
in Europe” of eocene times, denying the existence of a single 
specimen out of the nearly one hundre ed § supposed tertiary species 
which a modern systematic botanist would admit to be Proteaceous, 
unless received from a country where Proteacew were otherwise 
compact 16mo, a ve ery handy be book,” which may be carried i ‘i the 
Am. Jour. Sci.—Srconp Series, Vou. L, No, 149.— SEPt., 
18 
