1. Editorial

   EditorialNotes 01 October 2013 Pages: 783 - 785

2. Science smiles

   • Ayan Guha

   OriginalPaper 01 October 2013 Pages: 788 - 788

3. Littlewood and number theory

   • M. Ram Murty

   General / Article 01 October 2013 Pages: 789 - 798

4. Atoms — How small, and how large!

   • K. N. Joshipura

   General / Article 01 October 2013 Pages: 799 - 809

5. Grasshoppers — Generalists to specialists?

   • S. V. Eswaran
   • Akanksha Jindal

   Series / Article 01 October 2013 Pages: 810 - 816

6. Application of analytical geometry to the form of gear teeth

   • V. G. A. Goss

   General / Article 01 October 2013 Pages: 817 - 831

7. Circadian rhythms

   • K. L. Nikhil
   • Vijay Kumar Sharma

   Series / Article 01 October 2013 Pages: 832 - 844

8. A closer look at the Mulliken-Barker test

   • Kaushik Basu
   • Suchandra Chakraborty
   • Chandan Saha

   Classroom 01 October 2013 Pages: 845 - 848

9. Low cost demonstration experiment Lorentz force: Change in path of charged particles in magnetic field

   • Amit Ram Morarka
   • Chaitanya Dixit

   Classroom 01 October 2013 Pages: 849 - 855

10. Pure delight

    • Srinivas Bhogle

    Book / Review 01 October 2013 Pages: 856 - 858

11. Classics

    OriginalPaper 01 October 2013 Pages: 859 - 865