1. Richard Willstätter

   • T. R. Seshadri

   Announcement Pages: 143 - 157

2. Pulsations on mercury surface caused by polarisation

   • K. S. Gururaja Doss
   • Basrur Sanjiva Rao

   OriginalPaper Pages: 158 - 160

3. Opacity changes in gel-forming mixtures during setting

   • Mata Prasad
   • V. S. Gogate

   OriginalPaper Pages: 161 - 170