9240 Damping of Sound- Waves 



variation of pitch. Taylor, S. Ph. Mg. 44 

 (1872) 56. 



DIFFBACTION. 



Serrano y Fatigati, E. Arch. Sc. Ps. Nt. 49 



(1874) 151-. 



Jacques, W. W. Am. Ac. P. 11 (1876) 269-. 

 Tumlirz, O. A. A. (xn) Lotos 30 (1882) 35-. 

 Rayleigh, (Lord). [1888] E. I. P. 12 (1889) 



187. 

 Stevens, W. Le C. Franklin I. J. 127 (1889) 



445- ; N. Y. Ac. T. 8 (1888-89) 130-. 

 acoustic shadow of circular disk. Rayleigh 



(Lord). Ph. Mg. 9 (1880) 281-. 

 and other phenomena. Cauchy, A L C E 



15 (1842) 759-. 



9240 Damping of Sound-Waves 

 by Viscosity and Heat-Conduc- 

 tion. 



Duff, A. W. Ps. Ev. 11 (1900) 65-. 

 Audibility and dispersion of sound in air 



Krass, . [1897] Westf. Vr. Jbr. (1897- 



98) 149-. 



of sound, balloon experiments. Bacon, 

 (Rev.) J. M. Nt. 60 (1899) 484. 



Cooling of air by radiation and conduction; 



and propagation of sound. Rayleigh, (Lord). 



Ph. Mg. 47 (1899) 308-. 

 Damping, atmospheric. Vierordt, K. von. Z. 



Bl. 18 (1882) 383-. 

 , , due to internal friction. Stefan, J. 



Wien Sb. 53 (1866) (Ab. 2) 529-. 



with distance. Schaefer, K. L. A. Ps. C. 

 57 (1896) 785-. 



in human body. Vierordt, K. von. Z. Bl 

 19 (1883) 101-. 



soft bodies. Warburg, E. A. Ps. C. 136 



(1869) 285-. 

 solid bodies, due to internal resistance. 



Warburg, E. Berl. Mb. (1869) 538-; A. Ps. 



C. 139 (1870) 89-. 



of sound, and air radiation constant. Duff, 



A. W. Ps. Ev. 6 (1898) 129- ; Am. As. P. 

 (1899) 125-. 



, thermal conductivity. Brunhes, 



B. J. de Ps. 6 (1897) 289-. 



in telephony. Vierordt, K. von. A. Ps. C. 

 19 (1883) 207-. 



Decrease of intensity of shrill sounds with 

 time, rate. Duff, A. W. B A. Ep. (1897) 583. 



Diminution of velocity of sound in narrow 

 tubes. Schneebeli, H. A. Ps. C. 136 (1869) 

 296-. 



. Seebeck,A. A. Ps. C. 



139 (1870) 104-. 



Earthquakes, and wave propagation in absor- 

 bent media. Kohl, E. Mh. Mth. Ps. 9 

 (1898) 358-. 



Acoustic Transparency 9250 



Extinction of sound, causes. Haldat du Lys 

 vv*l*- Nancv Mm. S. Sc. (1840) 88- j 



M.ncb. 



~U. FA" 



Heat conduction, effect on sound in gas 

 Kirchhoff, G. A. Ps. C. 134 (1868) 177-.' 



~ri3ra 8 n 69) 7 63 2 U - nd - W **>*- ^*' 

 Eatio of specific heats in argon. Rayleigh, 



' 



mercury vapour. Kundt, A., 

 (& Warburg, E. Berl. Ak. Mb. (1875) 160-. 

 Sound source, effect of medium on vibrations. 

 **M* K. Wien Sb. 56 (1867) (Ab. 2) 



Telegraph wires, dampers to stop noise from 

 Bardonnaut, . J. Te'l. 9 (1885) 50-. 



9250 Acoustic Transparency. 



Tyndall, J. B. S. P. 22 (1874) 58-; Phil 



Trans. 164 (1874) 183- ; E. S. P. 22 (1874) 



359. 

 (Tyndall.) Fonvielle, W. de. C. E. 78 (1874) 



299. 



( .) Baudrimont, A. C. B. 78 (1874) 1224-. 

 Acoustic reversibility. Tyndall, J. E. S P 



23 (1875) 159-. ' 

 Application of principle of reciprocity to 



acoustics. Rayleigh, (Lord). [18761 E 



S. P. 25 (1877) lift-. 

 Fog, extinction of sound by. Reynolds, 0. 



[1873] Manch. Lt. Ph. S. P. 13 (1873-74) 



43. 



, recognition of sound source in. Serpette, 

 (le It.) A. Ev. Mar. et Col. 94 (1887) 183-. 



, ----- (Serpette). Clout, (vice- 

 amiral) G. Ev. Mar. et Col. 94 (1887) 



FOG SIGNALS. 



Robinson, T. R. B. A. Ep. (1863) 105-. 

 Henry, J. [1872-77] (x) Smiths. Misc. Col. 



20 (1881) Art. 2 (45)- (Wash. Ph. S. fill. 2 



(1875-80)) ; Smiths. Ep. (1878) 455-. 

 Collinson, (Vice-Adml.) R. [1875] Un. Serv. 



I. J. 19 (1876) 465-. 

 Henry, J. [1877] Wash. Ph. S. fill. 2 (1875- 



80) 162-. 

 anomalies of sound from. Johnson, A. B. 



[1881] Wash. Ph. S. Bll. 5 (1883) 23-. 

 apparatus, and lightship " Wand.elaar." Boul- 



vin, J. Brux. A. Tr. Pbl. 41 (1884) 416-. 

 audibility. Johnson, A. B. [1893] Science 23 



(1894) 3-. 



. White, C. A. Science 23 (1894) 59-. 

 Fowls, F. E. [1895] Nt. 53 (1895-96) 6. 

 . Hazen, H. A. Am. Met. J. 12 (1895-96) 



533 



