1. The structure and optical behaviour of iridescent agate

   • C. V. Raman
   • A. Jayaraman

   OriginalPaper Pages: 199 - 206

2. Synthetic experiments in the benzophyrone series

   • S. K. Mukerjee
   • T. R. Seshadri

   OriginalPaper Pages: 207 - 219

3. Effect of detergents on the activity and inactivation of invertase

   • H. C. Saraswat

   OriginalPaper Pages: 220 - 225

4. Studies on South Indian radioactive minerals

   • U. Aswathanarayana

   OriginalPaper Pages: 226 - 232

5. Raman effect in mixtures of benzaldehyde with alcohols and phenol

   • P. G. Puranik

   OriginalPaper Pages: 233 - 238

6. Anisotropic behaviour of rocks

   • S. Balakrishna

   OriginalPaper Pages: 239 - 243

7. Raney nickel reductions

   • G. N. Kao
   • B. D. Tilak
   • K. Venkataraman

   OriginalPaper Pages: 244 - 256

8. Chemical examination of plant insecticides

   • S. Rangaswami
   • B. V. Rama Sastry

   OriginalPaper Pages: 257 - 259