The natural and artificial disintegration of the elements, by Ernest R 69551 [Subtitle: An address by Professor Sir Ernest Rutherford] [Full title: The natural and artificial disintegration of the elements] [Full author's name: Ernest Rutherford] [Author: Ernest Rutherford] [Link: https://www.gutenberg.org/6/9/5/5/69551] [Files: 69551-0.txt; 69551-h.htm] Thanks to Laura Natal Rodrigues (Images generously made available by Hathi Trust Digital Library.) Regards, Jacqueline