DRAFT OF A CLASSIFICATION FOR THF WORLD's FAIR. 729 



904. Scientific Societies, devoted to Limited Subjects. 



Mathematical, astrouoiuical, chemical, geological, geogxa^jhical, zoological, 

 botaiiical, ethnological, philological, etc. 



905. Educational Societies and Organizations. 



Government Edncational Board. 

 Societies, etc. , 



90(5. Publication Societies. 



Society for the Promotion of Christian Knowledge, etc. 



907. Pkokessional Societies. 



Engineeriug, military, legal, medical, dramatic, etc. 



908, 909. Other Organizations. 



91. Science and Philosophy. 



910. History of Science and Philosophy. 



Portraits and memorials of philosophers and scientific investigators. 



911. Methods ok Investigation. 



Mathematics — Arithmetic, algebra, geometry, trigonometry, analytical ge- 

 ometry, calcnlns. 



Physics — Mechanics, statics, dynamics, nudecular physics, liquids, gas, sound, 

 light, heat, electricity, magnetism. 



Astronomy — Solar system, sun, moon, planets, stars, meteors, comets, earth, 

 geodesy, etc. Chronology. 



Chemistry — Inorganic and organic. Mineralogy and crystallography. 



Geology — Physical and dynamic. Meteorology. 



Biology — Zoology, botany, physiology, paleontology. 



Anthropology and ethnology — Philology. 



Sociology and history — Political economy and statistics. Governmental 

 institutions. 



Geography and physiography in general — Maps and atlases, geographical, 

 topograi»hical, hydrographical and astronomical. Relief maps. Eco- 

 nomic geography. 



912. Instruments of Precision for tf:st and record of space, distance, di- 



mensions, quantity and capacity, form and direction. 



Scales of length — Standards of length compared. Accessories to scales of 

 length, as calipers, verniers, micrometers, micrometric screws, dividing 

 machines. 



Quantity and cai>acity tests — Measures, gauges, for barrels, tonnage and 

 cordage tests. Gas and water meters. Tell-tales, indicators, etc. Gangers' 

 tools. 



Pedometers, odometers, viameters, perambulators, etc. 



Geodetic and surveying instruments — Theodolites, transits, needle com- 

 passes, base apparatus, etc., and other appliances for surveying, leveling, 

 geodesy, topography. Instruments for underground surveys. Sounding 

 apparatus. 



Apparatus for astronomical observations — Transits, transit circles, zenith 

 sections, equatorials, collimators, reflecting and repeating circles, heliostats 

 and siderostats, bolometers, etc., and other apparatus used in observations. 



Nautical astronomical instruments. Sextants, quadrants, repeating circles, 

 dip-sections. 



Form: Appliances for registry of form — Geometrical record (with models), 

 clinometers, crystalometers. Facial-angle systems. Draftsmen's instru- 

 ments, pantagraphs, etc. (See also Pictorial arts.) 



Direction: Leveling instruments and apparatus — Carpenters' and builders' 

 levels, land levels, water levels, engineers' levels. 



Compasses and their variations. 



Pliimli lines. 



