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However, the specifically Darwinian phase of evolutionistic thought, as laid down in Spencer's interminable volumes, for instance, is given up by reputable biologists the world over. There is pretty much of a Babel among them, when it comes to a definition of evolution.
Instantly the agile body is bent backward in a loop, while the teeth fasten to the knife-blade with an audible click. If our finger-tip is substituted for the steel, the force of the stroke and the prick and grip of the jaws are unpleasantly perceptible. In order to fully comprehend the make-up of this curious cave-dweller we must turn biologists for the moment.
Most biologists have asked for some more efficient cause, and assert that selection does not account for the appearance of variations, but only for their preservation, and that any valid theory of evolution must show how variations originate. It is chiefly in this respect that Darwin's work has failed to satisfy many later biologists.
'Such a palatial chamber for the development of negatives and prints can only be justified by the quality of the work produced in it, and is only justified in our case by such an artist as Ponting. From the dark room he went on to the biologists' cubicle, shared, to their mutual satisfaction, by Day and Nelson.
His public spirit was saturated with the sombre joys of conflict and the pleasant thought of condign punishment for all recalcitrant souls. That was the way of it, I perceived. That had survival value, as the biologists say. He was fool enough in politics to be a consistent and happy politician.... Hate and coarse thinking; how the infernal truth of the phrase beat me down that night!
Romanes writes: "Professor Weismann has shown that there is throughout the metazoa a general correlation between the natural lifetime of individuals composing any given species, and the age at which they reach maturity or first become capable of procreation." This, I believe, has been the conclusion generally arrived at by biologists for some years past.
Biologists tell us that the chief difference between the male and female organism is a difference in metabolism, that is, in the rapidity of organic change which goes on within the body. In the male metabolism is much more rapid than in the female; hence the male organism is said to be more katabolic.
From the description of cell life which we have given, it will be evident that no one of them is a material upon which our chemical biologists can longer found a chemical theory of life. That chemical theory of life, as we have seen, was founded upon the conception that the primitive life substance is a definite chemical compound.
The trouble was that he had never met anybody which included physicists, biologists, psychologists, psionicists, philosophers and theologians who could define the difference in satisfactorily exact terms. He watched the robot pivot on its treads and glide away, trailing steam from its coffee pot.
But it will not. The mother-principle is at the very foundations of the organic world, and defies all attempts of chemical synthesis to reproduce it. It would be presumptive in the extreme for me to question Professor Loeb's scientific conclusions; he is one of the most eminent of living experimental biologists. I would only dissent from some of his philosophical conclusions.
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