1. Editorial

   • Amitabh Joshi

   EditorialNotes 12 December 2018 Pages: 1159 - 1161

2. Science Smiles

   • Ayan Guha

   Announcement 12 December 2018 Pages: 1164 - 1164

3. Ernst Heinrich Philipp August Haeckel

   • Amitabh Joshi

   Article-In-A-Box 12 December 2018 Pages: 1165 - 1176

4. Vignettes of Haeckel’s Contributions to Biology

   • Amitabh Joshi

   General Article 12 December 2018 Pages: 1177 - 1204

5. Trophic Cascades

   • T Ramakrishna Rao

   General Article 12 December 2018 Pages: 1205 - 1213

6. What Exactly is the Electric Field at the Surface of a Charged Conducting Sphere?

   • F M S Lima

   General Article 12 December 2018 Pages: 1215 - 1223

7. From Heavens to Earth A Biography of Cumulus Clouds

   • Deepak Govind Madival

   General Article 12 December 2018 Pages: 1225 - 1242

8. How to Design Experiments in Animal Behaviour

   • Raghavendra Gadagkar

   Series Article 12 December 2018 Pages: 1243 - 1257

9. Condensation of Water Vapour in Ambient Atmosphere Under Applied Pressure at Room Temperature A Demonstration Experiment

   • Amit R Morarka

   Classroom 12 December 2018 Pages: 1259 - 1272

10. Burning, Fluttering, and Extinguishing of a Candle Flame in a Tube

    • Pratyush Agarwal
    • Navneet Kumar
    • Jaywant H Arakeri

    Classroom 12 December 2018 Pages: 1273 - 1281

11. Art Forms in Nature

    • T N C Vidya

    Classics 12 December 2018 Pages: 1283 - 1311

12. Crossword

    • Leena Thorat

    OriginalPaper 12 December 2018 Pages: 1313 - 1316

13. Science Academies’ Refresher Course in Experimental Physics

    Information and Announcements 12 December 2018 Pages: 1317 - 1317

14. Science Academies’ 3rd Refresher Course On Advances in Molecular Biology

    Announcement 12 December 2018 Pages: 1318 - 1318

15. Programme on Integrated Scientific Project Management for Women Scientists/Technologists

    Announcement 12 December 2018 Pages: 1319 - 1319