27 Sep
2022
27 Sep
'22
12:50 p.m.
The conservation of energy, by Balfour Stewart 69053 [Author: Balfour Stewart] [Link: https://www.gutenberg.org/6/9/0/5/69053] [Files: 69053-0.txt; 69053-h.htm] Thanks to Nina Akalis and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Regards, Jacqueline