=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 Archæology. 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._
=600 Useful Arts.= 601 Philosophy. 602 Compends. 603 Dictionaries. 604 Essays. 605 Periodicals. 606 Societies. 607 Education. 608 Patents. 609 History.