BE a a ree 
Review of Darwin’s Theory on the Origin of Species. 159 
flourished when the tree was a mere bush, only two or three, now grown 
into great branches, yet survive and bear all the other branches; so with 
the crust of the earth, and covers the surface with its ever branching and 
beautiful ramifications,” 
It may also be noted that there is a significant correspondence 
tween the rival theories as to the main facts employed. Ap- 
parently every capital fact in the one view is a capital fact in 
the other. The difference is in the interpretation. To run the 
Parallel ready made to our hands :* 
_ The simultaneous existence of the most diversified types under iden- 
Beal arcumstances, .... the repetition of similar types under the most 
diversified circumstances, .... the unity of plan in otherwise highly di- 
Wren ed of animals, .... the correspondence, now generally known 
em homologies, in the details of structure otherwise entirely dis- 
nected, down to the most minute peculiarities, .... the various de- 
ne have no genealogical connection, .... the simultaneous exist- 
in the earliest geological periods... .of representatives of all the 
great t ° dation | | 
ol ypes of the animal kin , ++. the gradation based upon com- 
Peations of structure which may be traced among animals built upon 
same plan; the distribution of some t over the most extensive 
font surface of the globe, while others are limited to particular geo- 
pegs l areas,....the identity of structures of these types, notwith- 
orem their wide geographical distribution, .... the community of 
ning Within the same geographical area, .... the connection by series 
of al structures observed in animals widely scattered over the surface 
@ globe,....the definite relations in which animals stand to the 
relati i 
“rounding world, .... the 
ns in which individuals of the same 
ie 
* " 
Agassiz, Essay on Classification; Contrib. to Nat. Hist,, i, p. 132, et seq, 
