TABLE OF CONTENTS 



PAGE 



PRELIMINARY NOTICE 



ON THE POLARIZATION OF " X " RAYS . . .... i 



ON A NEW SPECIES OF LIGHT ..,.'. ... '.;/. 7 



ON THE EXISTENCE, IN THE RADIATION EMITTED BY 

 AN AUER BURNER, OF RAYS TRANSMISSIBLE 

 THROUGH METALS, WOOD, ETC. . . . . .... 13 



ON NEW SOURCES OF RADIATIONS TRANSMISSIBLE 

 THROUGH METALS, WOOD, ETC., AND ON NEW 

 ACTIONS PRODUCED BY THESE RADIATIONS ... 1 8 



ON THE EXISTENCE OF SOLAR RADIATIONS CAPABLE 

 OF TRAVERSING METALS, WOOD, ETC 24 



ON A NEW ACTION PRODUCED BY " N " RAYS, AND 

 ON CERTAIN FACTS CONNECTED WITH THESE 

 RADIATIONS. 28 



ON NEW ACTIONS PRODUCED BY " N " RAYS ; GENE- 

 RALIZATION OF PHENOMENA ALREADY OBSERVED 34 



ON THE STORING OF " N " RAYS BY CERTAIN BODIES 38 



ON THE STRENGTHENING ACTION OF A BEAM OF 

 LIGHT ON THE EYES, WHEN THE BEAM is AC- 

 COMPANIED BY " N " RAYS * . . 43 



ON THE PROPERTY OF EMITTING " N " RAYS CON- 

 FERRED ON CERTAIN BODIES BY COMPRESSION, 

 AND ON THE SPONTANEOUS AND INDEFINITE 

 EMISSION OF "N" RAYS BY HARDENED STEEL, 

 UNANNEALED GLASS, AND OTHER BODIES IN A 

 STATE OF STRAINED MOLECULAR EQUILIBRIUM 48 



