-
- The Spectator, 11 February 1893
- Year: 1893
-
-
-
- The Spectator, 10 December 1892
- Year: 1892
-
- The Spectator, 5 November 1892
- Year: 1892
-
- The Spectator, 4 March 1893
- Year: 1893
-
- The Spectator, 6 May 1893
- Year: 1893
-
- The Spectator, 28 October 1893
- Year: 1893
-
- The Spectator, 14 January 1893
- Year: 1893
-
- The Spectator, 8 July 1893
- Year: 1893
-
- The Spectator, 20 May 1893
- Year: 1893
-
-
-
- The Spectator, 9 December 1893
- Year: 1893
-
- The Spectator, 17 December 1892
- Year: 1892
-
- The Spectator, 22 October 1892
- Year: 1892
-
- The Spectator, 11 November 1893
- Year: 1893
-
- The Spectator, 7 January 1893
- Year: 1893
-
- The Spectator, 7 April 1866
- Year: 1866
-
- The Spectator, 23 December 1893
- Year: 1893
-
- The Spectator, 11 February 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- Scientific American (Supplement), 8 August 1891
- Year: 1891
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
-
- Scientific American (Supplement), 15 August 1891
- Year: 1891
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
-
- The Spectator, 10 December 1892
- Year: 1892
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 5 November 1892
- Year: 1892
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 4 March 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 6 May 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 28 October 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 14 January 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 8 July 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 20 May 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- Scientific American (Supplement), 4 July 1891
- Year: 1891
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
-
- Scientific American (Supplement), 11 July 1891
- Year: 1891
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
-
- The Spectator, 9 December 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 17 December 1892
- Year: 1892
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 22 October 1892
- Year: 1892
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 11 November 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 7 January 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 7 April 1866
- Year: 1866
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 23 December 1893
- Year: 1893
- Publisher: The Spectator
- Language: English
- Place of Publication: London