ColophonAvailabilityThis eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of theProject Gutenberg Licenseincluded with this eBook or online atwww.gutenberg.org.This eBook is produced by the Online Distributed Proofreading Team atwww.pgdp.net.Scans for this book are available from the Internet Archive (copy1).Library of Congress Classification: UB290 .H5.Related Library of Congress catalog page:war16000058.Related Open Library catalog page (for source):OL7044123M.Related Open Library catalog page (for work):OL92027W.EncodingLibrary of Congress Subject HeadingsLibrary of Congress ClassificationRevision History2011-12-15 Started.External ReferencesThis Project Gutenberg eBook contains external references. These links may not work for you.CorrectionsThe following corrections have been applied to the text:PageSourceCorrection1messagesmessage17[Not in source],22beginingbeginning27bd28ofor37Kirckhoff’sKerckhoffs’44preceedingpreceding49WEWe51identfiedidentified63[Not in source].66[Not in source])670267[Not in source]189.:98. . . . . .. - . - . -98. - . - . -- - . . - -
ColophonAvailabilityThis eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of theProject Gutenberg Licenseincluded with this eBook or online atwww.gutenberg.org.This eBook is produced by the Online Distributed Proofreading Team atwww.pgdp.net.Scans for this book are available from the Internet Archive (copy1).Library of Congress Classification: UB290 .H5.Related Library of Congress catalog page:war16000058.Related Open Library catalog page (for source):OL7044123M.Related Open Library catalog page (for work):OL92027W.EncodingLibrary of Congress Subject HeadingsLibrary of Congress ClassificationRevision History2011-12-15 Started.External ReferencesThis Project Gutenberg eBook contains external references. These links may not work for you.CorrectionsThe following corrections have been applied to the text:PageSourceCorrection1messagesmessage17[Not in source],22beginingbeginning27bd28ofor37Kirckhoff’sKerckhoffs’44preceedingpreceding49WEWe51identfiedidentified63[Not in source].66[Not in source])670267[Not in source]189.:98. . . . . .. - . - . -98. - . - . -- - . . - -
This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of theProject Gutenberg Licenseincluded with this eBook or online atwww.gutenberg.org.
This eBook is produced by the Online Distributed Proofreading Team atwww.pgdp.net.
Scans for this book are available from the Internet Archive (copy1).
Library of Congress Classification: UB290 .H5.
Related Library of Congress catalog page:war16000058.
Related Open Library catalog page (for source):OL7044123M.
Related Open Library catalog page (for work):OL92027W.
This Project Gutenberg eBook contains external references. These links may not work for you.
The following corrections have been applied to the text: