Hindu physicians

This heating of iron in the presence of carbon, usually provided by a charcoal fire, is called carburizing. Hindu physicians were among the first to discover carburized iron, or steel, and use it for surgical instruments. In China carburizing was done directly by using carbon-rich iron ore. This technique was also discovered by an obscure... 

Nutmeg appears in the Hindu Pharmacopoeia as a treatment for fever, asthma and heart disease. Since the seventh century A.D., Arab physicians have used it for digestive disorders, kidney disease and lymphatic ailments. Yemeni men are said to consume nutmeg to increase and maintain their sexual vigor. 

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