1. The neutrino theory of light—II

   • Max Born
   • N. S. Nagendra Nath

   OriginalPaper Pages: 611 - 620

2. An optical investigation of some Indian oils

   • Ch. V. Jogarao

   OriginalPaper Pages: 621 - 624

3. On a conjecture of Ramanujan

   • Hansraj Gupta

   OriginalPaper Pages: 625 - 629

4. Reactivity of the double bond in coumarins and related α−β unsaturated carbonyl compounds

   • P. Suryaprakasa Rao
   • T. R. Seshadri

   OriginalPaper Pages: 630 - 638

5. The convection and variation of temperature near a hot surface

   • M. K. Paranjpe

   OriginalPaper Pages: 639 - 651

6. On a relation between two conjectures of the theory of numbers

   • S. Chowla

   BriefCommunication Pages: 652 - 653

7. The number of solutions of a congruence in two variables

   • Inder Chowla

   BriefCommunication Pages: 654 - 655

8. The structure of thin metallic films

   • S. Rama Swamy

   OriginalPaper Pages: 656 - 660

9. X-Ray diffraction and electrolytic dissociation—I.

   • R. S. Krisenan

   OriginalPaper Pages: 661 - 666

10. Lattice-theory of alkaline earth carbonates

    • B. Y. Oke

    OriginalPaper Pages: 667 - 674

11. Refractive indices and dispersions of gases and vapours

    • K. L. Ramaswamy

    OriginalPaper Pages: 675 - 686

12. The dipole moment and structure of pyrones

    • M. A. Govinda Rau

    OriginalPaper Pages: 687 - 697