1. On the chromatic diffusion halo and other optical effects exhibited by pearls

   • C. V. Raman
   • D. Krishnamurti

   OriginalPaper Pages: 265 - 271

2. On an absolute constant in the theory of tauberian series (II)

   • C. T. Rajagopal

   OriginalPaper Pages: 272 - 281

3. Behaviour of surface active substances at the dropping mercury electrode at different frequencies of the applied field

   • S. L. Gupta

   OriginalPaper Pages: 282 - 289

4. The temperature variation of the rotatory power of quartz from 30° to 410° C.

   • S. Chandrasekhar

   OriginalPaper Pages: 290 - 295

5. Synthetic experiments in the benzopyrone series

   • V. K. Ahluwalia
   • T. R. Seshadri

   OriginalPaper Pages: 296 - 300

6. Analysis and characterisation of the oil from the seeds ofThespesia Populnea

   • M. R. Subbaram

   OriginalPaper Pages: 301 - 304

7. The step-wise adsorption of nitrogen on carbon black

   • J. Garelick
   • G. Goldfinger
   • H. B. Kirkpatrick

   OriginalPaper Pages: 305 - 315