346 The Scope and Provinces of Zoology. [June, 
Prof. Haeckel’s works ” ; that, “ as we have no written 
pedigrees, we are forced to trace community of descent by 
resemblances of any kind. Therefore we choose, &c. ” ; that 
it is “ almost impossible ” to study phylogeny without “ the 
aid of a genealogical tree”; and that Prof. Haeckel tri- 
umphantly cited Mr. Darwin’s agreement with “ the general 
outline of the genealogical tree,” as given by himself 
(“ Origin of Species,” p. 381 ; “ Descent of Man,” p. 158 ; 
“ Origin of Species,” p. 372 and p. 379 ; “ Evolution of 
Man,” vol. i., pp. 103, 104). Consequently, for the benefit 
of those who approve of uniting phylogeny to the “ oetiolo- 
gical ” portions of oecology and psychology, I will construct 
the phylogeny of the Chordata from Mr. Darwin’s chapter on 
Affinities and Genealogy. Indeed, it is “ almost impossible” 
to avoid so doing; therefore, vide “ Descent of Man,” second 
edition, revised and augmented ; preface dated September, 
1874. 
Birds 
(Ostrich tribe) 
and Archaeopteryx. 
I 
Dinosaurians. 
Placentata, 
Implacentata. 
Monotremata. 
Amphibians — ? 
' \ \ 
Lepidosiren. Ganoids (Fishes) 
\ / 
Amphioxus. 
Ascidians. 
\ / \ 
\ / ? 
(Ichthyosaurians.) Reptiles 
In fine, therefore, there seems reason to adhere to the 
method of Dr. Mivart in respedt to the isolation of Phylo- 
geny ; oetiology being a science — “ wheels within wheels,” 
fit first-fruits of a book comparable to a “ cogwheel” striving 
to articulate with a fellow wheel of smooth circumference. 
Of course the theory of natural selection is not affedted by 
any considerations as to the knavery or naivete of one of its 
propounders, or the self-stultifications of his applauders. 
Discussion on the latter may be, perhaps, outside the sphere 
of a Journal of Science, while the maturity or puerility of 
natural and sexual selection affedt not even remotely the 
nomenclature, propriety, or the reverse, of the provinces of 
Zoology: — Ergology , Tectology, Taxonomy (provisionally), 
Chorology f and (Ecology . 
