The Gyroscopic Compass, by T. W. Chalmers 57200 [Link: http://track.smtpserver.email/20963/c?p=0P30ZzVwLKjjSwCqLIwNX5VoOyuXjvLbera-... ] [Files: 57200-0.txt; 57200-h.htm] Thanks to deaurider, Charlie Howard, and the Online Distributed Proofreading Team at http://track.smtpserver.email/20963/c?p=PAukkQITy5wT89QwGWSSwVXd2mWCF2R9r28f... (This file was produced from images generously made available by The Internet Archive) David