128. The most famous work by Varahamihira is the treatise on mathematical astronomy called the Pancha
Siddhantika ("Five Astronomical Treatises"). It is dated 575 AD. It is a summary of five earlier astronomical
systems, namely the Surya, Romaka, Paulisa, Vasistha and Paitamaha.
129. The silver coins issued during the Gupta period were called 'Rupaka.' These coins were based on Sakas
of Ujjaini weighing 32-36 grains. However, according to Fa-Hsien, cowries were the common means of
exchange.
130. The Tolkappiyam is a work on the grammar of the Tamil language written in the form of poems around
200 BC by Tolkappiyar complied in second sangam. The seat of the second Sangam was Kapatpuram. It was
attended by several poets and produced a large mass of literature, but only Tolkappiyam (the early Tamil
grammar) has survived.
131. Sung Yun Chinese traveler came to India in (517 518) AD after FaHien.
132. Odantapuri, in ancient times was a celebrated Buddhist centre of learning (vihara) in India identified
with modern Bihar Sharif in Bihar. It was founded in the 7th century CE by Gopala, the first ruler of the Pala
dynasty, in emulation of its neighbour Nalanda, another distinguished centre of Buddhist learning.
133. In the post-Vedic period, the entire northern territory mostly situated north of the Vindhyas and extending
from the North-West frontier to Bihar was divided into sixteen states called Sodasha Mahajanapadas. The
Buddhist literature, particularly the Anguttara Nikaya lists the 16 mahajanapadas given as - Gandhara,
Kamboja, Assaka, Vatsa, Avanti, Surasena, Chedi, Malla, Kuru, Panchala, Matsya, Vajji, Anga, Kosala
and Magadha.