《PHOTOGRAPHIC SENSITIVITY VOL 2》

SECTION A．ELECTRONIC PROCESS IN SILVER HALIDE CRYSTALS1

A 1．On the Exciton in Ionic Crystals （Toshinosuke Muto）1

A 2．Imperfections in the Silver Halides （Frederick C． Brown and Frederick Seitz）11

A 3．On the Absorption Spectra of the Silver Halides in the Ultraviolet Region（Masakazu Hayashi）31

A 4．Einfluss der Chemischen Fehlordnung auf Optische Eigenschaften der Silberhalogenide （K． Yamada, D． Heitkamp und H． J． Oel）33

A 5．Temperature Dependence of Photoconductivity of Silver Chloride Crystals（Noriaki Itoh and Tokuo Suita）41

SECTION B．LATTICE DEFECTS AND PHOTOLYSIS OF SILVER HALIDES47

B 1．The Photolysis of Crystals of Silver Halides （J． W． Mitchell）47

B 2．The Radiolysis of Silver Halide Crystals （C． S． Bogomolov and I． F．Rasorenova）65

B 3．Direct Observations of the Etching of Sub-macrocrystals of Silver Halides（Shin Fujisawa, Eiichi Mizuki and Kikuo Kubotera）71

B 4．The Electrolytic Conductivity of Silver Chloride in the Low Temperature Range （Tosiyuki Ninomiya and Sanemi Sonoike）81

B 5．Studies on the Behavior of Print-out Silver and Photolytic Halogens Uti-lizing Radioisotopes as Tracers （Kunio Takei）93

B 6．The Role of Silver Ions in Latent Image Formation （Akio Miyauchi）95

B 7．On Manganese Additions in Silver Halides （Hidetaro Abe）103

SECTION C．SENSITIZATION OF PHOTOGRAPHIC EMULSION111

C 1．Die Natur und die Funktionen Lokaler Fehlstellen in den Emulsionsmikro-kristallen （K． W． Tschibissow）111

C 2．On the Efficiency of Latent Image Formation from the Low Temperature Luminescence of Silver Chloride （Shoji Makisima, Takeshi Tomotsu and Sohachi Hayakawa）125

C 3．Latent Image Formation by Ultrasonic Waves （Syozo Totani and Yoshio Nishina）155

C 4．The Light-Intensity Dependence Factor in the Function of Chemical Sen-sitization （Eiichi Mizuki and Shin Fujisawa）163

POSTSCRIPT169

Some Research Problems on Photographic Sensitivity in the Future（Shin Fujisawa）169

APPENDICES171

Ⅰ．NOTES ON THE 2ND SYMPOSIUM ON PHOTOGRAPHIC SENSITIVITY171

Ⅱ．ABSTRACT OF THE PROCEEDINGS OF THE 3RD SYMPOSIUM ON PHOTOGRAPHIC SENSITIVITY173

1．Electron Bombardment Conductivity and Dielectric Breakdown in Silver Halide Single Crystals（Chiyoe Yamanaka, Noriaki Itoh and Tokuo Suita）175

2．On the V-Center in Alkali Iodide Crystals （Yoichi Uchida and Yoshio Nakai）177

3．Behavior of the Positive Hole in Silver Halides （Hiroshi Kanzaki）181

4．Photolytic Processes and Surface Potentials of Silver Bromide Crystals（Sanemi Sonoike, Syoji Tanaka and Tosiyuki Ninomiya）183

5．Die Einflusse der Verunreinigungskeime auf der Oberflache und der Unvollkommenheiten auf die Lichtelektrische Leitfahigkeit des Silberbromidkristalls （Keiichi Yamada, Shumpei Oka und Takashi Mukaibo）185

6．A Theory on Photosensitivity and Development in Silver Bromide Emulsion （Hiroshi Nozaki）189

7．A Study on Desensitization of Chemically Sensitized Emulsions by Oxidizing Reagents and the Restoration of Their Sensitivity by Prolonged Washing （Eiichi Mizuki and Shin Fujisawa）193