Roman Contributions in science were very limited. Most of the conclusions reached by Roman scientists were philosophical, and not the result of careful experimentation. They were the first to provide free medicine to poor patients. They maintained personal cleanliness, and for this purpose they built baths. They constructed hospitals and patients were treated by qualified Physicians.
The greatest Physician was Galen (130-200 CE). He wrote on Human Anatomy and Physiology. The knowledge of Human Anatomy enabled them to conduct operations and to remove goitres and tonsils. Galen was one of the first to discover the circulation of blood. The ‘Natural History’ of Pliny was a large Compendium of all known Science. Aretacus was the first to describe the symptoms of Diabetes and Diphtheria. The Romans borrowed the Etruscan rotation system, but it was not developed much above the level of arithmetic. Roman numerals I, X, L, C, etc. are still used today. The ancient Romans used numerals for commercial mathematics.
