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P L A P L A

PLAGIUM, in law, xxm. 233. PLAGUE, epidemic disease, xix. 159;

quarantine against, xx. 156; of London

(1664), xiv. 848; in Egypt, VH. 703.

, History of the, by Defoe, VII. 29.

, Cattle, xvil. 59.

PLAICE, fish, xix. 168.

PLAIDEURS, Les, Racine s play, xx. 206.

PLAIN CHANT, or Plain Song, in music,

xix. 168. PLAIN DEALER, The, Wycherley s play,

xxiv. 706. PLAINE DISCOVERY, Napier s work on

the Revelation, xvn. 178. PLAINFIELD, town, New Jersey, U.S.A.,

xix. 1 68.

PLAIN SONG, in music, xix. 168. PLAITING, Straw, xxn. 593. PLAKINA, genus of sponges, xxn. 425. PLANARIANS, group of worms, xix.

170. PLANCIUS, Petrus, Dutch cartographer,

xvn. 253; xix. 317. PLANCK, Gottlieb Jakob, German church

historian, XIX. 175. PLANE, in geometry, x. 386.

, tool, XL 437.

, tree, Culture of, II. 317.

FIGURES, Mensuration of, xvi. 14;

projection of, XIX. 793. PLANE-TABLE, for surveying, xxu. 718. PLANETARY MOTION, Mechanics of, xv.

684, 707, 724-

PLANETS, ii. 776; XL 70; Olbers s hypo thesis as to their origin, XVII. 753;

their action on the moon, xvi. 802;

minor, table of oppositions of, xvm.

251; rotation of, xxni. 374, 378;

Herschel on rotation of, XL 766;

Kepler s laws of their motion, xiv. 46;

Laplace s discoveries in motions of, xiv.

301 ; Leverrier s revision of theories

of, xiv. 487; Newton s laws of their

motion, xvi. 676; xvil. 441; Ptolemy

on, xx. 90. PLANIMETER, surveying instrument,

xxil. 721.

PLANING MACHINE, xv. 155. PLANIPENNIA, group of insects, xm.

151.

PLANISPHERE, Zodiacal, xxiv. 795. PLANK, Bending of, in mechanics, XV.

744- PLANOGAMETES, in plant reproduction,

xx. 425. . PLANTAGENET, English dynasty, xix.

175-

SPA, Canada, xvi. 436.

PLANTAGO, genus of plants, xix. 176.

PLANTAIN, plant, xix. 176.

PLANTAIN-EATER, bird, xxm. 487.

PLANTATIONS, Formation and manage ment of, ii. 322.

PLANTIN, Christophe, printer in Ant werp, xix. 176.

PLANTING, in arboriculture, II. 314.

PLANT-LOUSE, xm. 153.

PLANTS, distinguished from animals, III. 690; xix. 830; breeds of, IV. 244; classification, iv. 79; Linnreus s classi fication, xiv. 672; distribution, VII. 286; fertilization of, by insects, XIII. 142; geological action of, x. 289; his tology, XII. 10; insectivorous, Xlll. 134; mimicry in, xvi. 343; morpho logy, xvi. 841; parasitism, xvm. 264; physiology, XIX. 43; XXI. 406; propa gation and reproduction, XII. 211, 234; xx. 423; as totems, xxm. 468.

PLANUDES, Maximus, his Greek antho logy, II. 104; on numerals, xvil. 626.

PLANULA, in animal development, vill. 746.

PLASENCIA, town, Spain, xix. 177.

PLASMA, precious stone, i. 278.

PLASMOLOGY, study of cell-substance, xxiv. 817.

PLASSEY, or Plassy, India, Battle of (1757), vi. 10; xii. 801.

PLASTER CAST, for sculpture, xxi.

571-

PLASTERING, in architecture, II. 470.

PLASTER OF PARIS, or Gypsum, XL 351 ; xiv. 647, 648; quarries, XVI. 454.

PLASTER-WORK, in building, iv. 504.

PLASTICITY, of metals, xvi. 65.

PLASTIDOZOA, in Lankester s classifica tion, xxiv. 812.

PLAT, Sir Hugh, on manures, I. 297.

PLATA, La, or Argentine Republic, n. 487.

, Rio de la (The River Plate), river,

South America, xix. 187; II. 489.

PLAT^A, ancient town, Greece, xix. 177; battle of (479 B.C.), xvm. 436, 572.

PLATALEA, genus of birds, XXIL 430.

PLATANISTA, genus of cetacean mam mals, xv. 397.

PLATE, Gold and silver, xix. 178.

, one of the Princes Islands, Sea of

Marmora, XIX. 742.

, The River, South America, Xix.

187; II. 489.

PLATEARIUS, Joannes, medieval writer on medicine, XV. 806.

PLATEAU, Joseph Antoine Ferdinand, Belgian physicist, xix. 189; on sur face-tension, v. 58.

PLATED WARE, xix. 189.

PLATE GLASS, x. 662.

PLATEN-HALLERMUND, August, count of, German poet, XIX. 189; x. 545.

PLATEN PRINTING MACHINE, xxm. 704.

PLATE-PRINTING, vm. 439.

PLATERESQUE ARCHITECTURE, n. 442.

PLATERSPIL, musical instrument, xxm. 490.

PLATE SWIMMING, xxn. 771.

PLATFORMS, Railway, xx. 235.

PLATINERITE, mineral, xvi. 387.

PLATINIRIDIUM, mineral, xvi. 383.

PLATINOCYANIDES, platinum com pounds, xix. 192.

PLATINUM, metal, xix. 189; as chemical element, v. 537; xvi. 383; its use for the blowpipe, 111.837; specific heat of, xx. 132; in iron, xm. 284; mines of, in L T ral Mountains, Russia, xxiv. 5; mirrors made of, xvi. 501; ores of, XVI. 58; wire, XXIV. 615.

PLATO, Greek philosopher, xix. 194; his method of analysis, i. 793 ; in relation to Aristotle, II. 510; on astro nomy, II. 747; on the beautiful, I. 215; on communism, vi. 212; econo mic ideas of, XIX. 349 ; his ethics, vill. 579; on evolution, vm. 756; on the fine arts, IX. 199; his logic, xiv. 785; his metaphysics, xvi. 90; on the Mysteries, xvil. 125; on Socrates, xxn. 232; in relation to Socrates s teaching,

XXII. 237; on sophistry, XXIL 266; on transmigration of the soul, xvi. 106; his place in Greek literature, XL 142; Ast s translations and comment aries on, n. 735; Trendelenburg on,

XXIII. 542.

PLATON, Levshin, Russian archbishop,

XIX. 212.

PLATONISM, or Platonic Philosophy, i. 68; in relation to mysticism, xvi I. 130 ; Philo s affinities with, xvm. 760; as modified by Speusippus, xxn.

396.

PLATONISTS, Cambridge, xix. 211. PLATRIERE, Roland de la, French

Revolutionist, xx. 624. PLATT DEUTSCH, or Nieder Deutsch,

German idiom, x. 516; xvm. 785;

Renter s writings in, XX. 494. PLATTE, river, Nebraska, U.S.A., xvn.

307- FLATTEN- SEE, lake, Hungary, xn.

362. PLATTNER, Carl Friedrich, German

metallurgist, xix. 212. PLATTSBURGH, town, New York, U.S.A.,

xix. 213. PLATTSMOUTH, town, Nebraska, U.S.A.,

XVIL 309. PLATYHELMIA, phylum in Lankester s

zoological classification, xxiv. 813. PLATYHELMINTHES, order of worms,

xvn. 326; xix. 170. PLATYPUS, monotreme mammal, xix.

213; xv. 371, 377. PLATYSTERNID^E, family of chelonian

reptiles, XXIII. 457. PLAUEN, town, Saxony, xix. 215. PLAUTIANUS, commander of Roman

praetorian guards, xxi. 700. PLAUTUS, T. Maccius, Roman dramatist,

xix. 215; vii. 411; XX.7I7; language

of, xiv. 329, 331. PLAUZITE, mineral, xvi. 428. PLAY, PLAYS, Dramatic, vii. 391; copy right in, vi. 360; licensing of, XIX.