=450 Italian.= 451 Orthography. 452 Etymology.
453 Dictionaries. 454 Synonyms. 455 Grammar.
456 Prosody. 457 Dialects. 458 Texts. 459 Romansh
and Wallachian.
=460 Spanish.= 461 Orthography. 462 Etymology.
463 Dictionaries. 464 Synonyms. 465 Grammar.
466 Prosody. 467 Dialects. 468 Texts. 469 Portuguese.
=470 Latin.= 471 Orthography. 472 Etymology.
473 Dictionaries. 474 Synonyms. 475 Grammar.
476 Prosody. 477 Dialects. 478 Texts. 479 Medieval
Latin.
=480 Greek.= 481 Orthography. 482 Etymology.
483 Dictionaries. 484 Synonyms. 485 Grammar.
486 Prosody. 487 Dialects. 488 Texts. 489 Modern
Greek.
=490 Other Languages.= 491 Chinese. 492 Egyptian.
493 Semitic. 494 Indian. 495 Iranian. 496 Keltic.
497 Slavic. 498 Scandinavian. 499 Other.
=500 Natural Science.= 501 Philosophy. 502 Compends.
503 Dictionaries. 504 Essays. 505 Periodicals.
506 Societies. 507 Education. 508 Travels. 509
History.
=5l0 Mathematics.= 511 Arithmetic. 512 Algebra.
513 Geometry. 514 Trigonometry. 515 Conic sections.
516 Analytical geometry. 517 Calculus. 518 Quaternions.
519 Probabilities.
=520 Astronomy.= 521 Theoretical. 522 Practical.
523 Descriptive. 524 Maps. 525 Observations.
526 Figure of the earth. 527 Navigation. 528 Almanacs.
529 Chronology.
=530 Physics.= 531 Mechanics. 532 Hydrostatics.
533 Pneumatics. 534 Acoustics. 535 Optics. 536
Heat. 537 Electricity. 538 Magnetism. 539 Molecular
physics.
=540 Chemistry.= 541 Theoretical. 542 Experimental.
543 Analysis. 544 Qualitative. 545
Quantitative. 546 Inorganic. 547 Organic.
548 Crystallography. 549 Mineralogy.
=550 Geology.= 551 Physical Geography, Meteorology.
552 Lithology. 553 Dynamical geology. 554 Europe.
555 Asia. 556 Africa. 557 North America. 558
South America. 559 Oceanica.
=560 Paleontology.= 561 Plants. 562 Invertebrates.
563 Protozoa and Radiates. 564 Mollusca.
565 Articulates. 566 Vertebrates. 567
Fishes. 568 Reptiles and Birds.
569 Mammals.
=570 Biology.= 571 Prehistoric Archaeology. 572
Ethnology. 573 Natural History of Man. 574 Homologies.
575 Evolution. 576 Embryology. 577 Spontaneous
generation. 578 Microscopy. 579 Collectors’
Manuals.
=580 Botany.= 581 Physiological. 582 Systematic.
583 Ornamental. 584 Europe. 585 Asia. 586 Africa.
587 North America. 588 South America. 589 Oceanica.
=590 Zoology.= 591 Comparative Anatomy. 592 Invertebrates.
593 Protozoa and Radiates. 594 Mollusca.
595 Articulates. 596 Vertebrates. 597
Fishes. 598 Reptiles and Birds.
599 Mammals.
