 The early scholar Rudolf Hoernle proposed that some concepts from the "Suśruta-saṃhitā" could be found in the "Śatapatha-Brāhmaṇa", which he dates to the 600 BCE, and this dating is still often repeated.However, during the last century, scholarship on the history of Indian medical literature has advanced substantially, and firm evidence has accumulated that the "Suśruta-saṃhitā" is a work of several historical layers.Its composition may have begun in the last centuries BCE and it was completed in its present form by another author who redacted its first five chapters and added the long, final chapter, the "Uttaratantra."