The subject of armaments is treated in the articles Ship and Shipbuilding (see chapter For Marine Transportation Men), Armour Plates, with illustrations, by Major William Egerton Edwards, late lecturer at the Royal Naval War College, Greenwich, Ordnance, Ammunition, Torpedo, etc.

The following is an alphabetical list of articles in the Britannica of especial interest to naval officers or other students of naval warfare.

Part II
Courses of Educational Reading to Supplement Or Take the Place of School or University Studies

CHAPTER XXXI
MUSIC

The general articles on music in the Encyclopaedia Britannica provide an illuminative discussion of broad artistic principles which cannot fail to stimulate the musical sense and perception of the professional or the amateur. The technical and critical treatment of the subject was directed by Donald F. Tovey, composer, pianist, and author of Essays in Musical Analysis; and no one could be better fitted for the work of organizing this department of the Britannica. He was assisted by W. H. Hadow, the well-known musical writer and composer, J. A. Fuller Maitland, musical critic of The Times (London), E. J. Dent, author of Alessandro Scarlatti and His Works, R. H. Legge, principal musical critic on the Daily Telegraph (London), and others; and the section treating of musical instruments was organized and contributed by Miss Kathleen Schlesinger, the greatest living authority on the subject.

In mapping out courses of reading the subject is divided into sections as follows: (1) Evolution, (2) Theory, (3) Musical Forms, (4) Musical Instruments.

The article Music (Vol. 19, p. 72), by Donald Tovey, which contains a masterly account of the development of the art from the earliest time down to the present day, provides the reader with just that general survey which enables him to see the whole picture in perspective. This he will naturally turn to first, but to fill out the picture there are a number of other articles which he will wish to read. In the following scheme the evolution of the art has been sketched in skeleton, so that the student may have before him a guide to the study of any period in which he is specially interested. This outline serves to show how very thoroughly the ground is covered in the new Encyclopaedia Britannica.

(1) EVOLUTION OF MUSIC

Subject for Reading Article
PRE-HARMONIC STAGE
Primitive Music. Music (Vol. 19, p. 72).
Song (Vol. 25, p. 406).
Musical sense first awakened by the rhythm of the dance. Dance (Vol. 7, p. 795); see also Rhythm (Vol. 23, p. 278).
Legendary account of the invention of music by a Judean. David (Vol. 7, p. 859).
Hebrew music: setting of the Psalms. Psalms, Book of (Vol. 22, p. 539 and p. 536).
Suggested Jewish origin of some Gregorian Tunes. Plain Song (Vol. 21, p. 706).
Dawn of modern music in Greece. Connection of music with lyric poetry. Terpander of Lesbos (660 B.C.) adds 3 strings to the 4–stringed lyre, giving compass of octave. Greek Literature (Vol. 12, p. 509).
Characteristics of Greek music. Pythagoras (6th century, B.C.) fixes the intervals of the harmonic series and of the diatonic scale. Music (Vol. 19, p. 73); see also Pythagoras (Vol. 22, p. 699).
The Greek scale shows a latent harmonic sense, though octaves only allowed. Lyre (Vol. 17, p. 178); see also Orchestra (Vol. 20, p. 168); Aulos (Vol. 2, p. 917); Cithara (Vol. 6, p. 395).
Harmony (Vol. 13, p. 1).
Pitch in Greek music. Pitch, Musical (Vol. 21, p. 661).
Other primitive systems without influence on modern music. China, Literature (Vol. 6, p. 228 and p. 215).
Chinese adopted Pythagorean system; a lost art recovered in 3rd century, A.D.
Indian music—Scale of 22 intervals. Sanskrit (Vol. 24, p. 181).
Siamese music: 7 tone scale; orchestras perform in unison. Siam (Vol. 25, p. 5).
The music of the North American Indian. Indians, North American (Vol. 14, p. 470).