That the variability of an organism to a certain extent is a constant and certain condition of life we admit, otherwise there would be no distinguishable individuals of a species.

The laws of Coexistence;-the adaptation of structure to function; and to a certain extent the elucidation of natural affinities may be legitimately founded upon the examination of fully developed species;-But to obtain an insight into the laws of development,-the signification or bedeutung, of the parts of an animal body demands a patient examination of the successive stages of their development, in every group of Animals.

Manifold subsequent experience has led to a truer appreciation and a more moderate estimate of the importance of the dependence of one living being upon another.

That the variability of an organism to a certain extent is a constant and certain condition of life we admit, otherwise there would be no distinguishable individuals of a species.

Homologue. The same organ in different animals under every variety of form and function.

No naturalist has devoted more painstaking attention to the structure of the barnacles than Mr. Darwin.

Rapid innovation is the cure for the ills we face, but because innovation is difficult and susceptible to failure, we might need to rethink the way we approach innovation and how we drive it through our companies.