A German author Thomas Ritter has recently authored a book named 'The Secret of Indian Palm Leaf Libraries'.

In his book on page 81 to 85 Mr. Thomas Ritter describes his experiences of many Nadi centers he visited in India and the result of Carbon 14 test conducted in the famous "Institute for Ion Radiation of Physics Department 'placed in Nuclear Research Centre, Rossendorph, Saxen, Germany. This institute has been responsible to decide the age of ancient paintings and other documents of national importance in Germany, Thomas Ritter contacted expert C 14 scientists Prof. Fradrik and Dr. Hanse of the institute. He also confirmed from the experts on Tamil language in Germany that the matter is in fact Tamil language script. It is about predictions and not some religious matter.

On preliminary checking the scientists said that the matter written on the leaf has been etched out and some graphite like substance has been used so that the matter could be seen more clearly. Clearing the black substance from the leaf took some months. By then Thomas Ritter became increasingly anxious about the result. Some time in March 1995, he got the much awaited result, which clearly indicated that the age of that particular leaf was at least 350 years. Considering the deviation factor allowance generally given for this type of tests the report said the age could be between 350 to 400 years.