Since the innumerable species of animals and plants were not created by a supernatural miracle, but evolved by natural processes, their ancestral tree is their "natural system.
Still, I could only give the barest outlines in it of my chief object, the phylogenetic construction of a natural system.
To take another and more detailed instance, the Tasmanian wolf is an animal separated from true wolves in a natural system of classification.
In a natural system, he would borrow of any one out of many competing banks, selecting the one that would lend cheapest; but under our present artificial system, he is confined to a single bank, which can fix its own charge.
Because being created by state aid, it is more likely than a natural system to require state help.
The present is but a sample of how we are to proceed in our desire of obtaining a Natural system.
But the heteromeral Cantharides have also the same soft wings and mode of life, so that they are not in a natural system, even if devoid of principles, to be separated from the Malacopterous beetles.
Part II, The Jussieuean Arrangement of nearly 4,000 Genera with Introduction to Natural System, etc.
Descriptions of Phaenogamous British Plants growing spontaneously in the vicinity of the Metropolis, Natural System, also Linnaean arrangement of all Indigenous British Species and a Sketch of Botanical Geography.
They all fall into one grand natural system; and this fact is at once explained on the principle of descent.
Natural System; and which is foundation of distinction
Every attempt that we make to gain a knowledge of the pedigree of any small or large group of organisms related by blood must, in the first instance, start with the evidence afforded by the existing "natural system" of this group.
Like Darwin, all other adherents of the Theory of Descent have only treated it in a general way, and not made the attempt to carry it out specially, and to treat the "Natural System" actually as the pedigree of organisms.
Although he highly appreciated the work of Linnaeus he disliked his system of classification on account of its artificiality, and he intended to bring forward a natural system of his own.
An arrangement then which shall be so absolutely correct an expression of the plan of nature as to justify its being called the Natural System is a chimera.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "natural system" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
