historical and literary value of Purananuru poems may be limited because the poems were not a perfect work of art but one of compulsion from impoverished poets too eager to praise one king or another, seeking patrons through exaggeration and flattery rather than objectivity. The Purananuru poems use words, phrases, and metaphors, including references to the Himalayas of "immeasurable heights", Shiva, Vishnu, the four Vedas, the Ramayana, rivers, and other aspects. Anthology Among the eight Sangam anthologies, Purananuru and Pathitrupathu are concerned with life outside family – kings, wars, greatness, generosity, ethics and philosophy. While Pathitrupathu is limited to the glory of Chera kings in 108 verses, Purananuru contains an assortment of themes in three hundred ninety seven poems. Of the original 400 poems, two have been lost, and some poems miss several lines. Structure and content There are 400 poems in Purananuru including the invocation poem. Each poem measures anywhere between 4 and 40 lines. Poems 267 and 268 are lost, and some of the poems exist only in fragment. The author of 14 poems remain unknown. The remaining poems were written by 157 poets. Of the poets who wrote these poems, there are men and women, kings and paupers. The oldest book of annotations found so far has annotations and commentary on the first 266 poems. The commentator Nachinarkiniyar, of the eleventh–twelfth century Tamil Nadu, has written a complete commentary on all the poems. Subject matter The Purananuru poems deal with the puram aspect of the Sangam literature, that is war, politics and public life. Many poems praise kings and chieftains. Some of the poems are in the form of elegies in tribute to a fallen hero. These poems exhibit outpourings of affection and emotions. Purananuru is notable for three features: the king and his believed powers over the climate and environment (rains, sunshine, successful crops), the ancient Tamil belief in the power of women's purity, namely karpu (chastity), and the ancient system of caste (kuti, kudi) that existed in Tamil kingdoms. According to Hart and Heifetz, the Purananuru content is organized in the following way (poem sequence number in brackets): Invocation to Shiva (1) Praise of kings (2-64) Death of the king, messengers, bards, bragging king, captive treatment, odds, speed of war, warriors, singing poets, poor poet and generous kings (65-173) Ethical and moral poems (182-195) Kings who were not generous to poets (196–211) Death of kings,