98 ELECTRICAL MEASUREMENTS 



9. "Ein neues Galvanometer," W. EINTHOVEN, Annalen der Physik, 4th 

 series, vol. JL2, 1903, p. 1059. "Theory of the String Galvanometer of 

 Einthoven", ALBERT C. CREHORE, Phil. Mag., vol. 28, 1914, p. 207. 



10. "tJber eine neue Method fur Dampfung Oszilierender Galvanometer 

 Auschlag," W. EINTHOVEN, Annalen der Physik, vol. 16, 1905, p. 20. 



11. "tlber eine Vorrichtung um Messinstrumente gegen des 

 erschiitterungen des Bodens zu schiitzen," W. H. JULIUS, Wied Annalen, 

 1895, vol. 56, p. 151. 



12. "A Universal Shunt Box for Galvanometers," W. E. AYRTON and T. 

 MATHER, The Electrician, vol. 32, 1893-94, p. 627. 



13. "High Frequency Ammeters," J. H. BELLINGER, Bulletin of the 

 Bureau of Standards, vol. 10, 1914, p. 91. 



14. "Absolute Measurements in Electricity and Magnetism," A. GRAY, 

 vol. 2, part I, p. 275. "The Gray Absolute Electrodynamometer," E. B. 

 ROSA, Bulletin of the Bureau of Standards, vol. 2, 1906, p. 71. 



15. "A Tubular Electrodynamometer for Heavy Currents," P. G. 

 AGNEW, Bulletin of the Bureau of Standards, vol. 8, 1912, p. 651. 



16. "A Determination of the International Ampere in Absolute Measure," 

 E. B. ROSA, N. E. DORSEY and J. M. MILLER, Bulletin of the Bureau of 

 Standards, vol. 8, 1912, p. 269. "A New Current Weigher and a Deter- 

 mination of the Electromotive Force of the Normal Cadmium Cell," 

 W. E. AYRTON, T. MATHER and F. E. SMITH, Phil. Trans, of the Royal 

 Society, vol. 207, Collected Researches, Nat. Phys. Lab., vol. 4, 1908, p. 3. 



17. "Measuring Stray Currents in Underground Pipes," CARL BERING, 

 Trans. A. I. E. E., vol. 31, 1912, p. 1449. 



