These are the eighteen sciences which grace Philosophia Indica.
1)The Science of Being as Being – Vedanta Sastra
2)The Science of Cosmic Union – Yoga Sastra
3)The Science and Wisdom of the Heavens – Jyothis Sastra
4)The Science and Wisdom of Nature – Sankhya Sastra
5)The Science of Atoms – Vaisesika Sastra
6)The Science of Logic – Nyaya Sastra ( also called Tarka Sastra ).
7)The Holistic Science of Life – Ayurveda Sastra
8)The Science of Wealth, Economics – Artha Sastra
9)The Science of Grammar – Vyakarana Sastra
10)The Science of Definition – Niruktha Sastra
11)The Science of Phonetics – Siksha Sastra
12)The Science of Poetic Meters – Chandas Sastra
13)The Science of Musicology – Gandharva Veda
14) The Science of Symbology – Purana Sastra
15) The Science of Ethics – Dharma Sastra
16) The Science of Archery – Dhanur Veda
17) The Science of the Serpent Power – Tantra Sastra
18) The Science of Matter – Charvaka Sastra