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The main arguments in favour of it appear to him to be the general ones; the homologies and analogies revealed by comparative morphology and physiology, the ascending series in the palæontological record, vestigial organs, parasitic degeneration, the origin of those vital associations which we call consortism and symbiosis.

The former are parasitic economies which feed off the latter. The relationship is often not that of symbiosis, where two parties maintain a mutually beneficial co-existence. Here, one economy feeds off others in a way, which is harmful, even detrimental to the hosts. But this interaction however undesirable is the region's only hope.

These different effects do not appear to be due to a specific action of any one of the organisms present, but to the combined effect of a particular group living in symbiosis.

Quite independent of their host for existence, these molluscs are not to be stigmatised as parasites, though the individual spur to which each is attached is invariably destroyed by the union, merely sufficient remaining for the support of the intruder. Natural science provides many illustrations of symbiosis, or the intimate association of two distinct organisms.

"No, no you miss the point! I speak of parasitic in the exact meaning of the word. You must realize that to a biologist there is no real difference between parasitism, symbiosis, mutualism, biontergasy, commensalism " "Stop, stop!" Brion said. "Those are just meaningless sounds to me. If that is what makes this planet tick I'm beginning to see why the rest of the staff has that lost feeling."

In the coccids, the green particles grow into a kind of yeast that lives within the insect. Not a parasite, but a real symbiote...." Her eyes opened wide as she caught the significance of her own words. A symbiote and Dis was the world where symbiosis and parasitism had become more advanced and complex than on any other planet.

The crystals are alive; the opaque faces are lichens that have something like chlorophyll and can make their food from air and sunlight. The rocks and lichens live in symbiosis. They have intelligence of a sort, but fortunately they don't mind us, or our automatic mining machinery.

But, as political or scientific theories are natural phenomena and not the capricious and ephemeral products of the free wills of those who construct and propagate them, it is evident that if these two currents of modern thought have each been able to triumph over the opposition they first aroused the strongest kind of opposition, scientific and political conservatism and if every day increases the army of their avowed disciples, this of itself is enough to show us I was about to say by a law of intellectual symbiosis that they are neither irreconcilable with, nor contradictory to, each other.

And is it possible to stop this process of decay without finding some form of civil symbiosis which will ensure for all men a more human mode of living? In the affirmative case what course should we take, and is it presumable that there should be an immediate change for the better in the situation, given the national and economic interests now openly and bitterly in conflict?

From this symbiosis there began to be formed a new people, the so-called T'u-yü-hun, a hybridization of Mongol and Tibetan stock with a slight Turkish admixture. Kuang had considerable success in Turkestan; he had brought considerable portions of eastern Turkestan under Fu Chien's sovereignty and administered those regions almost independently.