Schedule of Classification 



5260 Pyro- and Piezo-Electricity. 

 Other Sources. (See also 

 Mineralogy 340.) 586-587 



Pyro- and Piezo-Electricity 586-587 

 Piezo-Electricity ... 586 



Pyro- Electricity 586-587 



Minerals 587 



Other Sources 587 



5270 Atmospheric Electricity. (See 



also Meteorology 1600.) 587-591 



Lightning 589-590 



Lightning Conductors 589-590 

 Theory 591 



Magnetism. 



5400 General 591-593 



Experiments 592 



Light 592-593 



5410 Natural and Artificial Mag- 

 nets. (See also 6030.) 593-598 

 Artificial Magnets 593-597 



Magnetisation ... 594-595 



Magnetisation of Various 



Bodies ... 594-595 



Iron 594 



Steel 595 



Magnetisation by Elec- 

 tricity 595 



Magnets, Various Kinds 595-596 

 Permanent Magnets ... 596 



Poles 597 



Natural Magnets . . . 597-598 



5420 Theory of the Magnetic 



Field. Magnetic Circuit 598-604 

 Theory of the Magnetic 



Field 598-604 



Action at a Distance ... 598 

 Laws of Magnets and 

 Electromagnets of 

 Various Forms 599-600 



Lines of Magnetic Force 600 

 Magnetic Distribution 600-601 



Magnetic Field 601 



Magnetic Field produced 

 by Currents. (See also 



6420.) 601-603 



Magnetisation 603 



Mutual Action of Mag- 

 nets .'.. 603 



Magnetic Circuit 604 



5430 Theory of Magnetic Induc- 

 tion and Hysteresis 604-608 

 Theory of Magnetic Induc- 

 tion 604-607 



Induced Magnetism . . . 605 

 Magnetic Screening 605-606 



Magnetisation 606 



Hysteresis 607-608 



5435 Magnetic Testing. Instru- 

 ments ... ... 608-610 



Magnetic Testing 608 



5440 



5450 



5460 



5462 



5466 



5467 



PAGE 



Instruments. (See also 



Meteorology 3012.) 608-610 



Magnetometers 609 



Measurement of Magnetic 

 Force, Susceptibility, In- 

 duction, etc. ... 610-617 



Magnetic Force 610 



Measurement of Magnetic 



Force 610-612 



Magnetic Fields ... 611 

 Universality of Magne- 

 tism ' 611-612 



Measurement of Magnetic 



Induction ... ... 612 



Measurement of Magnetic 



Susceptibility ' 612-617 

 Magnetic Permeability... 613 

 Magnetic Properties of 



Various Substances 613-614 



Iron 613-614 



Magnetisation ... ... 614 



Magnetisation of Various 



Substances . . . 614-615 



Iron 614-615 



Susceptibility of Various 



Substances ... 616-617 



Torsion 617 



Measurement of Hysteresis. 



Energy Losses ... 617-619 



Measurement of Hysteresis 617-618 

 Energy Losses ... 618-619 



Relations between Thermal, 

 Elastic, and Magnetic 

 Properties of Bodies. 

 Effect of Temperature 619-622 

 Relations between Elastic 

 and Magnetic Properties 



of Bodies 619 



Relations between Thermal 

 and Magnetic Pro- 

 perties of Bodies 619-620 

 Heat due to Magnetisa- 

 tion 620 



Effect of Temperature 620-622 



Low Temperature Effect 621 



Magnetostriction .. ' 622-624 



Length Change .. 622-623 



Sound Production . . . 623 



Stress, Magnetic 623 



Torsion 623-624 



Volume Change 624 



Magnetic Properties of Alloys 

 of Iron and of other 

 Ferromagnetic Sub- 



624 



624 



625 

 625 



Magnetic Properties of 

 Ferromagnetic Substan ces 

 not Alloys of Iron 

 Magnetic Properties of Salts 

 and Solutions ... 



Magnetic Properties of Salts 



