1. What is anatomy? 2. How is it divided? How is the latter division subdivided? 3. What is physiology? Give another definition. 4. How is physiology divided? Give a subdivision. 5. What is hygiene? 6. Define organic bodies. -=-=-=-=-=-=-=-=-=-=-=-= 7. In general, organic matter differs so materially from inorganic, that the one can readily be distinguished from the other. In the organic world, every individual of necessity springs from some _parent, or immediate producing agent_; for while inorganic substances are formed by chemical laws alone, we see no case of an animal or plant coming into existence by accident or chance, or chemical operations. 8. Animals and plants _are supported by means of nourishment_, and die without it. They also increase in size _by the addition of new particles of matter to all parts of their substances_; while rocks and minerals grow only by additions to their surfaces. 9. "Organized bodies always present a combination of both solids and fluids;--of solids, differing in character and properties, arranged into organs, and these endowed with functional powers, and so associated as to form of the whole a single system;--and of fluids, contained in these organs, and holding such relation to the solids that the existence, nature, and properties of both mutually and necessarily depend on each other." 10. Another characteristic is, that organic substances have a _certain order of parts_. For example, plants possess organs to gain nourishment from the soil and atmosphere, and the power to give strength and increase to all their parts. And animals need not only a digesting and circulating apparatus, but organs for breathing, a nervous system, &c. -=-=-=-=-=-=-=-=-=-=-=-= 6. Define inorganic bodies. 7. What is said of the difference, in general, between organic and inorganic bodies? 8. What of the growth of organic and inorganic bodies? 9. What do organized bodies always present? 10. Give another characteristic of organized substances. -=-=-=-=-=-=-=-=-=-=-=-= 11. _Individuality_ is an important characteristic. For instance, a large rock may be broken into a number of smaller pieces, and yet every fragment will be rock; but if an organic substance be separated into two or more divisions, neither of them can be considered an individual. Closely associated with this is the power of _life_, or _vitality_, which is the most distinguishing characteristic of organic structure; since we find nothing similar to this in the inorganic creation.