-
- Scientific American (Supplement), 4 May 1895
- Year: 1895
-
- The Spectator, 22 January 1898
- Year: 1898
-
- The Spectator, 12 March 1898
- Year: 1898
-
-
-
- The Spectator, 11 September 1897
- Year: 1897
-
- The Spectator, 19 February 1898
- Year: 1898
-
- The Spectator, 17 July 1897
- Year: 1897
-
-
- The Spectator, 30 October 1897
- Year: 1897
-
- Scientific American (Supplement), 4 May 1895
- Year: 1895
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
-
- The Spectator, 22 January 1898
- Year: 1898
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 12 March 1898
- Year: 1898
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- Scientific American (Supplement), 30 March 1895
- Year: 1895
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
-
- Scientific American (Supplement), 13 April 1895
- Year: 1895
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
-
- The Spectator, 11 September 1897
- Year: 1897
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 19 February 1898
- Year: 1898
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 17 July 1897
- Year: 1897
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- Scientific American (Supplement), 2 June 1894
- Year: 1894
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
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- The Spectator, 30 October 1897
- Year: 1897
- Publisher: The Spectator
- Language: English
- Place of Publication: London