THIRD SUMMARY SECTIONS 
Useful arts Applied science 
boo Useful arts 
601 Filosofy 
602 Compends 
603 Dictionaries 
604 Essays 
605 Periodicals 
606 Societies Fairs Exhibitions 
607 Education Schools of technology 
608 Patents Inventions 
609 History of useful arts 
610 Medicin 
611 Anatomy 
612 Physiology 
613 Hygiene Gymnastics Training 
614 Public helth 
61: Materia medica Therapeutics 
616 Pathology Diseases Treatment 
617 Surgery Dentistry 
618 Diseases of women and children 
619 Comparativ medicin Veterinary 
620 Engineering 
621 Mechanical 
622 Mining 
623 Military Naval 
624 Bridge and roof 
625 Road and railroad 
526 Canal 
627 River and harbor 
628 Sanitary Waterworks 
629 Other branches 
630 Agriculture 
631 Farm Farmsted 
632 Hindrances Protection 
633 Pield crops: grains, grasses etc. 
634 Fruits Forestry 
635 Garden crops 
636 Domestic animals 
637 Dairy and dairy products 
638 Bees, silkworms etc. 
639 Hunting Trapping Fish culture 
640 Home economics 
Bax Food Cookery 
622 Serving Entertaining 
542 Shelter: house, home 
644 Heat Light Ventilation 
645 Furnishing Decoration 
646 Clothing Toilet 
647 Household administration 
648 Sanitary precautions 
649 Nursery Sickroom 
650 Communication Business 
651 Offis economy 
652 Writing: materials, typewriters 
653 Abbreviations Shorthand 
654 Telegraf Cables Signals 
655 Printing Publishing Copyright 
556 Transportation: railroading etc. 
637 Bookkeeping Accounts 
658 Business methods 
659 Advertising and other topics 
660 Chemic technology 
661 Chemicals 
662 Pyrotechnics Explosivs 
663 Beverages 
554 Foods: sugar, starch etc, 
365 Lights: gas, oil, candles etc. 
666 Keramics: glas, clay, cement ete. 
667 Bleaching Dyeing Inks Paints 
668 Other organic chemic industries 
66g Metallurgy Assaying 
670 Manufactures 
671 Articles made of metals 
672 Of iron & steel; stoves, cutlery 
673 Of bras & bronze; bels etc. 
674 Lumber & articles made of wood 
675 Lether “ “  lether 
676 Paper “ “ paper 
677 Textils 
678 Rubber & articles made of rubber 
679 Celluloid and other 
680 Mechanic trades 
681 Watch and instrument making 
682 Blacksmithing Horseshoeing 
683 Lock and gun making 
684 Carriage and cabinet 1naking 
685 Saddlery & shoemaking Trunks 
686 Bookbinding 
687 Clothing industries 
688 
689 Other trades 
6go Bilding 
691 Materials Processes Preservativsg 
692 Plans and specifications 
693 Masonry Plastering etc. 
694 Carpentry Stairbilding 
695 Roofing: slating, tiling 
696 Plumbing: gas and steam fitting 
697 Heating and ventilating 
698 Painting Glazing Paperhanging 
699 Carbilding