Problem in solid, by George O. Smith 68418 [Author: George O. Smith] [Link: https://www.gutenberg.org/6/8/4/1/68418] [Files: 68418-0.txt; 68418-h.htm] Thanks to Greg Weeks, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net Regards, Al