Transcriber’s Notes:The cover image was created by the transcriber, and is in the public domain.The illustrations have been moved so that they do not break up paragraphs and so that they are next to the text they illustrate.Typographical and punctuation errors have been silently corrected.Page 41: “1,000,000 feet or 300,000 kilometres per second” changed to “1,000,000,000 feet or 300,000 kilometres per second”
Transcriber’s Notes:The cover image was created by the transcriber, and is in the public domain.The illustrations have been moved so that they do not break up paragraphs and so that they are next to the text they illustrate.Typographical and punctuation errors have been silently corrected.Page 41: “1,000,000 feet or 300,000 kilometres per second” changed to “1,000,000,000 feet or 300,000 kilometres per second”
Transcriber’s Notes:
The cover image was created by the transcriber, and is in the public domain.
The illustrations have been moved so that they do not break up paragraphs and so that they are next to the text they illustrate.
Typographical and punctuation errors have been silently corrected.
Page 41: “1,000,000 feet or 300,000 kilometres per second” changed to “1,000,000,000 feet or 300,000 kilometres per second”