B.A. Frolov. Numbers in Paleolithic graphic art and the initial stages in the development of mathematics, in Soviet Anthropology and Archaeology, 16 (3-4), 1978, pp. 142-166.

A. Marshack. Upper paleolithic notation and symbol, in Science, 178: 817-28, 1972.

E.K.A. Tratman. Late Upper Paleolithic Calculator? Gough's Cave,
Cheddar, Somerset, in Proceedings, University of Bristol,
Speleological Society, 14(2), 1976, pp.115-122.

Iwar Werlen. Ritual und Sprache: Zum Verhältnis von Sprechen und
Handeln in Ritualen. Tübingen: Narr Verlag, 1984.

Inner clock, or biological clock, defines the relation between a biological entity and the time-based phenomena in the environment. As with the so-called circadian cycles (circadian meaning almost the day and night cycle, circa diem), rhythms of existence persist even in the absence of external stimuli. The appearance, at least, is that of an inner clock.

The notion of genetic code describes a system by which DNA and RNA molecules carry genetic information. Particular sequences of genes in these molecules represent particular sequences of amino acids (the building blocks of proteins) and thereby embody instructions for making of different types of proteins. On the same subject, but obviously at a deeper level than a dictionary definition, is James D. Watson's celebrated book, The Double Helix: a personal account of the discovery of the structure of DNA. (A new critical edition, including text, commentary, reviews, original papers, edited by Gunther S. Stent). London: Weidenfeld and Nicolson, 1981.

Homeostasis: the tendency towards a relatively stable equilibrium between interdependent elements of the human body. Physiological processes leading to body equilibrium are interlocked in dynamic processes.

References to the oral phase of language in Claude Lévi-Strauss:
La Pensée Sauvage (1962). Translated as The Savage Mind. Chicago:
University of Chicago Press, 1966. Le Cru et le Cuit (1964) The
Raw and the Cooked. Trans. John and Doreen Weightman. New York:
Harper and Row, 1970.

Andrew and Susan Sherrat (quoted by Peter S. Bellwood, Op.cit): A distinction accepted is that between unvocalized (Hebrew, Arabic) and vocalized alphabets (starting with the Greek, in which the vowels are no longer omitted). Some languages use syllabaries, reuniting a consonant and a following vowel (such as in the Japanese Katakana: ka, ke, ki, ko, ku). When two different conventions are applied, the writing system is hybrid: the Korean language has a very powerful alphabet, hangul, but also uses Chinese characters, but pronouned in Korean. The hangul system (15th century) expressed, for Koreans, a desire for self- identity.

Plato. Phaedrus, and The Seventh and Eighth Letters (translated from the Greek), with an introduction by Walter Hamilton. Harmondsworth: Penguin Press, 1973.