Motion, Velocity, Direction or Extension, Re-action, Form, Personality, Opposition of Agents, Priority, or Sequence, Rhythm.
The teacher must correlate these heads or topics of his discourse together, and so memorise his correlations that he can recall the series in the exact order. Perhaps he may proceed thus:
MOTION. [Rate of motion.] VELOCITY. [Relation of motion to time and _space_--.] DIRECTION or Extension. [Direction reversed.] RE-ACTION. [Mould of Action.] FORM. [Form of the Human.] PERSONALITY. [Its extremes.] OPPOSITION OF AGENTS. [First opponent.] PRIORITY or Sequence. [Periodicity of Sequence.] RHYTHM.
Knowing these Nine Laws in the above _order_, he can discuss them one after the other. When he has finished his explanation of the reduction of the three Forms of Motion [Concentric, Poise, and Eccentric] to the Law of Correspondence, he can proceed to the consideration of the sub-topics under Velocity, and so on. When he has fixed the other of his topics in mind, he has a mental chart or map to guide him in his exposition, and similarly in other cases.
Learn some of the "Antidotes," and at least two of the following series. Do _not_ learn the extracts from Quain's Anatomy unless you understand what is meant, or are a medical student.
MERCURY--36,000,000 [{ M}ercury { Sh}ines].
EARTH--93,000,000 [{ P}lanetary { M}other].
MARS--141,000,000 [{ Th}is Wo{ r}ld's Ou{ t}sider].
JUPITER--482,000,000 [{ R}ather { F}lattened E{ n}ds, or, A { R}oundish { F}orm U{ n}equalled].
SATURN--885,000,000 [{ F}loods o{ f} { L}ight].
URANUS--1,780,000,000 [{ D}isturbances { C}aused { F}ruitful { S}earchings].
NEPTUNE--2,789,000,000 [{ N}eptune { C}onstitutes a { F}rontier { B}oundary].
1. How many planets are here mentioned? Make your own correlations between each.
TO BE STUDIED BY NONE BUT MEDICAL STUDENTS.
"The Branches of the External Carotid Artery are eight in number, _viz._, three directed forwards, the superior thyroid, the lingual, and the facial; two directed backwards, the occipital and the posterior auricular; and three extending upwards, the ascending pharyngeal branch, together with the temporal and internal maxillary, the two terminal branches into which the artery divides."
Dissect, or study a model or diagram of these branch arteries, and then the facts are easily learned by means of Correlations:--