1. The ultraviolet and infrared spectra of some lichen depsides and depsidones

   • P. S. Rao
   • K. G. Sarma
   • T. R. Seshadri

   OriginalPaper Pages: 1 - 14

2. Estimation of the energy of the primary and C.M.S. velocity of jets by various methods

   • A. A. Kamal
   • G. K. Rao

   OriginalPaper Pages: 15 - 32

3. Generalized symmetry and Neumann’s principle

   • S. Bhagavantam
   • P. V. Pantulu

   OriginalPaper Pages: 33 - 39

4. Kinetic studies in ester hydrolysis

   • Sekharipuram V. Anantakrishnan
   • R. V. Venkataratnam

   OriginalPaper Pages: 40 - 45

5. Infrared absorption spectra of single crystals of glycine silver nitrate and monoglycine nitrate

   • A. V. R. Warrier
   • P. S. Narayanan

   OriginalPaper Pages: 46 - 54

6. Production of X-radiation in the Crab nebula

   • M. V. K. Apparao

   OriginalPaper Pages: 55 - 59

7. Field strengths of 164 kHz radio-waves received at Ahmedabad from Tashkent in 1960–65 and effect of solar X-ray emissions

   • S. Ananthakrishnan
   • K. R. Ramanathan

   OriginalPaper Pages: 60 - 67