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ATOMS AND MOLECULES IN DEAD AND LIVING MATTER loi<br />
prefigure limbs. In the siren, two very tiny rudimentary anterior limbs, with imperfect digits, appear. In the<br />
Amphiuma, these are increased to four (two anterior and two posterior). In the MenobrancJius, the same arrangement<br />
obtains ; the limbs, though still very rudimentary, being a little larger. The limbs increase in size, and<br />
become more differentiated in the triton and crocodile, and are perfected in quadrupeds and bipeds.<br />
The tendency of the body to proliferate into extremities, digits, rays, &c., proves clearly enough that the<br />
dendritic, or branching type, is common both in the organic and inorganic kingdoms. In fact, the branching<br />
formations which occur in such great numbers in plants and animals are the analogues of the dendrites seen in<br />
minerals and metals ; in the arborescent frost pictures ; in the branching lightning, &c. The spiral formations<br />
so common in plants and animals have also their representatives in the physical universe. These, as already indicated,<br />
appear as physical vortices, in spiral sand-storms, spiral water-spouts, and spirally-arranged nebulae. The<br />
physical spiral arrangements may not inaptly be regarded as the forerunners or heralds of the twisted stems and<br />
the revolving movements of cUmbing plants ; and<br />
of the twisted bones and extremities of quadnipeds and bipeds,<br />
with their spiral joints and complement of spiral muscles and spiral movements.<br />
No doubt many will fail to perceive any possible connection between spiral sand-storms, spiral water-spouts,<br />
spiral nebulae, &c., and the spiral stems and revolving movements of plants, and the twisted Umbs and spiral<br />
movements of animals, as seen in walking, swimming, and flying ; and if so, no one will be disposed to cavil or<br />
impute blame ; still the resemblances are so striking, when carefully looked into, that no scientific inquirer can<br />
afford to pass them over. They are especially striking, when it is felt that they are the results of the spiral dis-<br />
tribution and spiral movements of the atoms and molecules common ahke to the inorganic and organic kingdoms.<br />
They, in fact, point to the existence of a great law of growth, development, and movement which reigns supreme<br />
in both kingdoms, whereby atoms and molecules coalesce to form crystals and dendrites in the physical universe,<br />
and plants and animals in the mysterious universe of fife. The law indicated, there is reason to believe, governs<br />
not only the major operations which produce movement and form in crystals, dendrites, plants, and animals, but<br />
also the minor operations which determine the arrangements and movements of the atoms which form molecules,<br />
of the molecules which form cells, and of the cells which form tissues.<br />
§ 19. Atoms and Molecules the same in Dead and Living Matter.<br />
There are good grounds for beheving that the distribution and movements of atoms and molecules in the<br />
organic and inorganic kingdoms are not essentially different, what difference there is being traceable to the presence<br />
of Hfe in the organic kingdom ; fife controlling, within limits, the elements of the inorganic kingdom, but working<br />
virtually on the same lines as obtain in that kingdom.<br />
The ultimate distribution and movements of matter in the organic and inorganic kingdoms, when one comes<br />
to think of it, should not materially differ. The one is part of the other. The organic comes from and returns to<br />
the inorganic ; the elements in both are the same. The plant and animal borrow all the materials forming their<br />
bodies, and much of the force which energises them, from the inorganic kingdom. There is therefore no room for<br />
antagonism between the organic and inorganic kingdoms, in so far as the dendritic and spiral formations and<br />
movements which prevail in both are concerned.<br />
The oneness, the practical identity, structurally and functionally, which obtains in the organic and inorganic<br />
kingdoms, affords perhaps the strongest argument for design yet put forward. It shows that the great First Cause<br />
is the Author of the organic and inorganic kingdoms aUke ; that He works contiaually, and on the same lines in<br />
both ; that the two kingdoms are complemental, in fact, working parts of each other ; that the organic kingdom,<br />
while an elaboration and differentiation of the inorganic kingdom, is in no sense an inimical elaboration.<br />
This accoimts for the reciprocation which is known to exist as between plants and animals, and as between both<br />
and the physical imiverse ; for the reciprocation which is known to take place as regards the intake and output<br />
of extraneous matters (soUd, fluid, and gaseous) during the Uves of plants and animals ; for the reciprocation of<br />
day and night, and the seasons, in their bearing on the growth, development, and rhythmic movements of plants<br />
and animals ; for the continued prevalence of law and order in the physical universe, and in the world of plants<br />
and animals, whereby the latter, and all parts of the latter, are duly provided for as regards looahty, environ-<br />
ment, food, &c.<br />
As, on the one hand, it is impossible to conceive of the physical universe as a chance combination of hetero-<br />
geneous substances and movements, so, on the other hand, it is impossible to imagine the great kingdom of plants<br />
and animals as the product of spontaneous generation and of accident. The controlling power of the Creator<br />
alone can explain the glories of the heavens and the wonders of animated nature. The same Master-Mind regulates<br />
the outgoings and incomings of both. It is unphilosophical to assume that law and order prevail in every depart-