1. References to source books for analysis are given in the panels.
2. Huxley T.H.: quoted in The Harvest of a Quiet Eye (comp.A.L.Mackay, ed. M. Ebison), The Institute of Physics, Bristol - London 1977, p. 78.
3. Garfield E.: Current Contents (1971) No.32, 5–9. Repr. in Garfield E.: Essays of an Inform.Scient., Vol.1, ISI, Philadelphia 1977, p.224–228.
4. Garfield E.: Current Contents (1974) No.1, 5–9. Repr.in Garfield E.: Essays of an Inform.Scient., Vol.2, ISI, Philadelphia 1977, p. 1–5.
5. Garfield E.: Current Contents (1977) No.19, 5–20. Repr.in Garfield E.: Essays of an Inform.Scient., Vol.3, ISI, Philadelphia 1980, p.348–363.