DOCUMENTATION OF LITERATURE COMMISSION VI 
  
  
$5 Pneumatic machines. Refrigeration technology 
9 Conduits, pumps, & containers for gases and liquids 
o7 Workshop practice 
8 Hoisting, conveying, transmission machinery 
9 Machine tools. Planes, saws, drill, etc. 
622 Mining engineering 
623 Military and naval engineering 
624 Civil engineering 
625 Techniques of traffic on land. Railways, Roads 
626 General hydraulic engineering. Waterways 
6277 Natural water courses. Rivers, ports, and roadsteads 
. 628 Sanitary technology. Heating. Illumination 
629.1 Transport engineering : 
ae Aeronautics, Aircraft engineering 
630 Agriculture. Forestry. Stockbreeding. Fisheries 
640 Domestic sciences 
650 Commercial sciences 
660 Chemical industry, Chemical technology 
670 Manufacture and processing of simple materials 
680 Manufacture of complex objects 
690 Building industry and trades. Construction. Building 
700 — GRAPHIC ARTS,.* FINE ARTS, APPLIED ARTS, INDUSTRIAL ARTS 
710 Town and country planning. Landscape and garden design 
720 Architecture 
730 Sculpture 
740 Drawing. Industrial arts 
750 Painting 
760 Graphic arts 
# Webster's dictionary states that the graphic arts include 
painting, drawing, engraving, and any other arts which per- 
tain to the expression of ideas by means of lines, marks, or 
characters impressed on a surface, : 
  
761 
Letter Press (Printing from raised surfaces) 
«4. General 
» à Techniques and processes used in letter press 
«21 Preparation of various types of raised surfaces 
«213. Wax engraving 
«212 Hand-cut plates 
2213 Photo engraving 
2l Light-sensitive chemicals (See under 774) 
3 Non-sensitive coatings carrying light- 
sensitive materials 
Line engraving (Wood cuts, linoleum blocks, etc.)