Binita Jaiswal ByExpress News ServiceCHENNAI: Century-old rare books lying in the library of Geology department of Presidency College will get a new lease of life soon. It is a treasure trove as we have many rare books, which will hardly be found anywhere else. “Experts from Geological Survey of India have visited our library to refer the rare books,” said Gowtham. We have segregated the rare books on a priority basis. The pages are fragile and the digitisation work needs to be done meticulously,” said principal of the college, R Ravanan..