-
- The Spectator, 16 March 1889
- Year: 1889
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- The Spectator, 25 May 1889
- Year: 1889
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- The Spectator, 15 December 1888
- Year: 1888
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- The Spectator, 12 January 1889
- Year: 1889
-
- The Spectator, 16 February 1889
- Year: 1889
-
- The Spectator, 11 May 1889
- Year: 1889
-
- The Spectator, 13 April 1889
- Year: 1889
-
- The Spectator, 29 March 1890
- Year: 1890
-
- The Spectator, 11 April 1868
- Year: 1868
-
- The Spectator, 16 March 1889
- Year: 1889
- Publisher: The Spectator
- Language: English
- Place of Publication: London
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- Scientific American (Supplement), 13 September 1890
- Year: 1890
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
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- The Spectator, 25 May 1889
- Year: 1889
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 15 December 1888
- Year: 1888
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 12 January 1889
- Year: 1889
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 16 February 1889
- Year: 1889
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 11 May 1889
- Year: 1889
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 13 April 1889
- Year: 1889
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 29 March 1890
- Year: 1890
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 11 April 1868
- Year: 1868
- Publisher: The Spectator
- Language: English
- Place of Publication: London