REFERENCES AND QUOTATIONS. 319 
“Nageli proves that since the glacial period an alteration 
has taken place in Alpine plants, and the manner in which it 
occurred.” Z 
59 J, Broca, L’Ordre des Primates. Paralléle anatomique de 
Yhomme and des singes, 1870. 
51 Descent of Man, p. 367. a 
5° At the time at which we write, we have before us, unfortunately, 
only the incomplete reports of the daily papers, and the syllabus 
of Professor. Max Miillers “Three Lectures on Mr. Darwin’s 
Philosophy of Language.” 
53 Zéllner, “ Ueber die Natur der Kometen” (1 ed. p. 305). 
54 For the further instruction of the reader, we will allow another 
Philosopher and Naturalist to speak respecting the primordial com- 
mencement of life, to our apprehension so simply accountable. 
The hypothesis of. origin is under discussion. In the critical 
examination of the “ Philosophie des Unbewussten” (7) it runs 
thus, p. 22. The “ Philosophie des Unbewussten” says, p. 558 : 
“It is probable that before the origin of the first organisms, 
organic combinations existed which (p. 556) were under the influ- 
ence of a damp atmosphere, abounding in carbonic acid, and of a 
higher temperature, light, and stronger electric influences. If these 
presuppositions are adopted, and the consideration added that if 
conditions thus favourable to primordial generation once existed, 
which they must have done—they probably endured during con- 
siderable geological periods—the inference is in truth inevitable 
that in lapse of time and with change of circumstances, these 
organic ‘substances aggregated into innumerable combinations. 
Among these innumerable modes of arrangement, groupings and 
combinations, by far the greater portion must remain at the grade 
of inorganic form, because it has not attained the needful chemical 
composition and physical properties ; a very much smaller portion 
of-the results produced by these combinations of organic materials 
might perhaps transitorily approach the organic form or even actu- 
ally assume it, yet without possessing the constitution necessary to 
maintain it permanently; a third and yet smaller portion might 
perhaps maintain this form for itself in the exchange of material, 
about as long as the approximate duration of life of one of the 
most primitive of the present Protists, yet lacked those properties 
which preserve the species by division and reproduction after the 
