4240 Rontgen Rays 



showing red fluorescence. Siguy, G., & 

 Gundelag, E. C. E. 125 (1897) 602-. 



with vacuum regulator. Siemens, , & Halske, 

 . Cztg. Opt. 18 (1897) 53-. 



and ultra-violet light. Raveau, C. Eclair. 



Elect. 6 (1896) 249- ; Par. S. Ps. Se. (1896) 



42-. 

 , action on electric discharge. Sella, 



A., & Majorana, Q. Em. E. Ac. Line. Ed. 



5 (1896) (Sen. 1) 323-, 389-; Nt. 54 (1896) 

 53. 



, conductivity of air by. Kelvin, 

 (Lord), Beattie, J. C., d Smoluchowski de 

 Smolan, M. Edinb. E. S. P. 21 (1897) 

 406-. 



and uranium, conductivity of gases 



by. Beattie, J. C., & Smoluchowski de 

 Smolan, M. Ph. Mg. 43 (1897) 418-. 



universal illumination screen. Kratzenstein, 

 . [1898] Fschr. Eontgenstr. 2 (1898-99) 

 70. 



use of artificial hexagonal prisms of phos- 

 phorescent blende. Troost, . C. E. 122 

 (1896) 564-. 



and effect of Holtz machine. Suhr, P. 

 [1896] Danzig Schr. 9 (1895-98) (Hefte 3 



6 4) xiv. 



of fluorescent screens. Salvioni, E. [1896] 

 N. Cim. 5 (1897) 63-. 



. Thompson, S. P. C. E. 122 



(1896) 807-. 



. Trowbridge, C. C. [1896] N. Y. 



Ac. A. 11 (1898) 39-. 



certain phosphorescent substances for 

 rendering visible. Jackson, H. C. S. P. 12 



(1897) 57-. 



phosphorescent zinc sulphide. Henry, C. 



C. E. 122 (1896) 312-. 

 screens. Henry, C. C. E. 123 



(1896) 400-. 



and their velocity. Sella, A., & Majorana, Q. 



Em. E. Ac. Line. Ed. 5 (1896) (Sem. 1) 168-. 

 velocity of ions produced in gases by (ratio). 



Zeleny, J. Ph. Mg. 46 (1898) 120-. 

 . Zeleny, J. [1900] Phil. 



Trans. (A) 195 (1901) 193-. 

 , measurement. Brunhes, B. C. E. 130 



(1900) 127-. 

 vibration direction. Dora, E. Halle Nf. Gs. 



Ab. 21 (1896-98) [53]-. 

 visibility. Brandes, G. Berl. Ak. Sb. (1896) 



547-. 

 . Brandes, G., & Dorn, E. A. Ps. C. 60 



(1897) 478-. 



. Strauss, A. Mth. Termt. Ets. 15 (1897) 



305- ; Mth. Nt. B. Ung. 15 (1899) 1-. 

 . Dorn, E. A. Ps. C. 64 (1898) 620-. 



to the blind. Hilgartner, H. L., <& Nor- 

 thrup, E. F. Texas Ac. Sc. T. 2 (No. 1) 



(1897) 29-. 



colour blind. Dorn, E. A. Ps. C. 66 



(1898) 1171-. 



wave-length. Fomm, L. Munch. Ak. Sb. 26 

 (1897) 283-. 



(Fomm's experiments). Tiddens, P. G. 

 Amst. Ak. Vs. 5 (1897) 408- ; Fschr. Ps. 

 (1897) (Ab. 2) 732. 



and Cathode Rays 4240 



wave-length, method of determining. Tiddens, 

 P. G. Amst. Ak. Vs. 5 (1897) 444- ; Fschr. 



Ps. (1897) (Ab. 2) 732. 

 and variation of 



properties with. Dwels- 

 hauvers-Dery, F. V. Brux. Ac. Bll. 31 

 (1896) 688-. 



RONTGEN RAYS AND CATHODE RAYS. 



Battelli, A., <& Garbasso, A. N. Cim. 3 (1896) 



289-. 



Gruner, P. Bern Mt. (1896) vi-. 

 Guillaume, C. E. Par. S. Ps. Se. (1896) 



105-. 

 Richarz, . [1896] N.-Vorp. Mt. 28 (1897) 



x-, xvi. 



(Electric shadows and luminescence.) Thomp- 

 son, S. P. [1896] E. I. P. 15 (1899) 191-. 

 Villari, E. [1896] Bologna Ac. Sc. Mm. 6 



(1896-97) 117-. 



Perrin, J. A. C. 11 (1897) 496-. 

 Poincare, H. Par. Bur. Long. An. (1897) D. 



35 pp. ; Ev. Sc. Ind. 29 (1897) 41-. 

 Precht, J. A. Ps. C. 61 (1897) 330-. 

 Swinton, A. A. C. [1898] E. I. P. 15 (1899) 



580-. 

 Zehnder, L. [1898] Freiburg B. 11 (1899- 



1901) 1-. 

 and analogous radiations. Perrin, J. Par. S. 



Ps. Se. (1896) 121-. 



Becquerel rays, relations. Thompson, S. P. 

 B. A. Ep. (1896) 712. 



existence of Eontgen in cathode rays. Roiti, A. 



Em. E. Ac. Line. Ed. 6 (1897) (Sem. 2) 123-. 

 and "internal" rays. Thompson, S. P., et 



alii. Elect. 38 (1897) 356-, et seq. 



Lenard rays. Sutherland, W. Ph. Mg. 47 

 (1899) 269-. 



(Sutherland). Thomson, J. J. Ph. 



Mg. 47 (1899) 415-. 

 magnetic deviation. Metz, G. de. C. E. 125 



(1897) 17-, 426-. 



. Sandrucci, A. N. Cim. 7 (1898) 

 112-. 



mechanical action. Graetz, L. A. Ps. 1 (1900) 



648-. 

 physical difference. Geitler, J. (Ritter) von. 



Wien Ak. Sb. 107 (1898) (Ab. 2o) 526-. 

 relation. Battelli, A. N. Cim. 5 (1897) 



386-. 

 , theory. Thomson, J. J. Ph. Mg. 45 (1898) 



172-. 

 and size and density of atoms. Guglielmo, G. 



Em. E. Ac. Line. Ed. 7 (1898) (Sem. 2) 189- ; 



8 (1899) (Sem. 1) 378-. 

 theories. Rollins, W. Am. J. Sc. 10 (1900) 



382-. 



Vacuum tubes in field of Euhmkorff's coil. 



Borgman, I., & Petrovskij, A. Es. Ps.-C. 



S. J. 31 (Ps.) (1899) 137-. 

 , photographic action within and without. 



Battelli, A. N. Cim. 5 (1897) 169- ; Ph. Mg. 



43 (1897) 133-. 



480 



