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Página 191 - Natural selection acts only by the preservation and accumulation of small inherited modifications, each profitable to the preserved being...
Página 195 - A celebrated author and divine has written to me that he has "gradually learnt to see that it is just as noble a conception of the Deity to believe that He created a few original forms capable of self-development into other and needful forms, as to believe that He required a fresh act of creation to supply the voids caused by the action of His laws.
Página 195 - We reach at length those organisms which I have compared to drops of oil suspended in a mixture of alcohol and •water. We reach the protogenes of Haeckel, in which we have " a type distinguishable from a fragment of albumen only by ita finely granular character.
Página 187 - ... confirmed, by the natural and civil history of the world, collected from common historians, from the state of the earth, and from the late invention of arts and sciences.
Página 197 - ... thought. We see with undoubting certainty that they go hand in hand. But we try to soar in a vacuum the moment we seek to comprehend the connection between them. An Archimedean fulcrum is here required which the human mind cannot command; and the effort to solve the problem, to borrow...
Página 196 - Abandoning all disguise, the confession that I feel bound to make before you is that I prolong the vision backward across the boundary of the experimental evidence, and discern in that matter which we. in our ignorance and notwithstanding our professed reverence for its Creator, have hitherto covered with opprobrium the promise and potency of every form and quality of life.
Página 188 - ... higher among the superimposed strata, more perfect forms appear. The change, however, from form to form was not continuous, but by steps — some small, some great. ' A section,
Página 198 - nascent senses " are spoken of, when " the differentiation of a tissue at first vaguely sensitive all over" is spoken of, and when these processes are associated with " the modification of an organism by its environment," the same parallelism, without contact or even approach to contact, is implied.
Página 197 - In fact, the whole process of evolution is the manifestation of a Power absolutely inscrutable to the intellect of man.
Página 190 - No man would ever try to make a fantail till he saw a pigeon with a tail developed in some slight degree in an unusual manner, or a pouter till he saw a pigeon with a crop of somewhat unusual size; and the more abnormal or unusual any character was when it first appeared, the more likely it would be to catch his attention.