Brihat Samhita

It was written in the 6th century A.D. (or 1st century B.C.) in about 4000 Sanskrit verses (slokas) by the polymath known as Varahamihira, who was considered as a great scientific scholar of mathematics, astronomy and astrology. The Brihat-samhita is written as an encyclopedia covering topics ranging from astronomy to divination and various arts such as architecture, agriculture and jewelry, temples, planetary motions, eclipses, timekeeping, astrology, seasons, cloud formation, rainfall, agriculture, mathematics, gemmology, perfumes and many other topics.