CONTENTS. 



Pt. I. Published Dec. 19th, 1895. 



On a Certain Class of Fraunhofer^ Diffraction-Phenomena. By H. p ag e. 

 Naoaoka, Rigakuhakiishi 1 



Lines of Equal Intensity about tli3 Point of Intersection of Fraun- 

 hofers Diffraction Bands. By H. Nagaoka, Rigakuhakiishi 7 



Note on Tinfoil Grating as a Detector for Electric Waves. By T. 



Mizuno, Rigalcushi, Professor of Physics, Dzüchi Kötö Gakkü 15 



The Thermo-electric Effects of Longitudinal Stress in Iron- .By K. 



Tsuruta, Rigakushi, Assist. -Prof, of Physics, Science College, Imperial 

 University 27 



Thermo-electric Effects of Longitudinal Tension in Different Metals. 



By K Tsuruta, Rigalcushi, Assist. -Prof, of Physics, Science College, 

 Imperial University 53 



Not3S Oil the Topaz from Mino. By T. Hiki, Rigakushi, Science College, 



Imperial University 09 



Mercury Perchlorates. By M. Chikashige, Rigalcushi, Science College, 



Imperial University 77 



Potassium Nitrosulphate. By E. Divers, M.D., F.R.S., Prof., and T. 

 Kaga, F.C.S., Rigakuhakiishi, Assist. -Prof., Science College, Imperial 

 University 85 



Sodium NitroSOSUlphate. By E. Divers, M.D., F.R.S., Prof., and T. Haga, 

 F.C.S., Rigakuhakiishi, Assist.-Prof., Science College, Imperial Uni- 

 versity 87 



The Constitution of the Nitrosulphates. By E. Divers, M.D., F.a.s.. 



Prof., and T. Haga, F. O.S., Rigakuhakiishi, Assist. -Prof., Science College, 

 Imperial University 101 



Pt. II. Published Febr. 19th, 1897. 



The Tinfoil Grating Detector for Electric Waves. By T. Mizuno, 



Rigaknski, Professor of Physics, First Higher School Ill 



On the Piedmontite-ihyorite from Shinano. By N. Yamasaki, Rigakushi, 



College of Science, Imperial University {With Plate VI.) 117 



The Atomic Weight of Japanese Tellurium. By Masumi Chikashiok, 



Rigakushi, College of Scieuce, Imperial University 123 



