[A] See Appendix, Translators' Notes. 1. FORMATION OF UNORGANIZED BODIES (CRYSTALS). When separated and promiscuously moving molecules of any substance in solution or in a melted condition pass into the solid form by reason of removal of the causes of separation and motion (warmth or solvent), they arrange themselves into solid masses impermeable to liquids. These minute bodies grow by accretion, and when molecular forces are permitted to act undisturbed, assume the regular outer form and inner structure of crystals. The number of crystals, their size, changes of form and growth, all depend on external conditions. 2. FORMATION OF LIVING ORGANIZED (MICELLAR) BODIES. Certain organic compounds, among them albumen, are neither soluble, despite their great affinity for water, nor are they fusible, and hence are produced in the micellar form. These compounds are formed in water, where the molecules that arise immediately adjoining each other arrange themselves into incipient crystals, or micellae. Only such of the molecules as are formed subsequently and come in contact with a micella contribute to its increase in size, while the others, on account of their insolubility, produce new micellae. For this reason the micellae remain so small that they are invisible, even with the microscope. On account of their great affinity for water the micellae surround themselves with a thick film of it. The attraction of these micellae for matter of their own kind is felt outside this film. Hence the micellae with their films unite themselves into solid masses permeated with water, unless other forces overcome attraction and re-establish a micellar solution (as in albumen, glue, gum), where the slightly moving micellae show a tendency to cling together in chain-like and other aggregations. Very often there are found, especially in albumen, half liquid modifications intermediate in fluidity between the solid masses and the micellar solution. The internal and external constitution of micellar bodies depends essentially on the size, form and dynamic nature of their micellae, since these efficients condition the original arrangement of the micellae and the insertion in proper order of those formed later. External conditions have slight influence on structure, and affect outer form chiefly in so far as they can mechanically hinder free development. The micellae of albumen or plasma are susceptible of the greatest diversity of form, size and chemical composition, since they originate from unlike mixtures of various albumen compounds, and besides are mixed with various organic and inorganic substances. For this reason the plasma behaves, both chemically and physically, in many unlike ways, and in consequence of the variable relation of the micellae to water, the plasma shows all degrees of micellar solution up to quite solid masses. 3. SPONTANEOUS GENERATION. LIFE. GROWTH.