-
- The Spectator, 18 December 1880
- Year: 1880
-
- The Spectator, 8 February 1879
- Year: 1879
-
- The Spectator, 27 September 1879
- Year: 1879
-
- The Spectator, 1 November 1879
- Year: 1879
-
- The Spectator, 11 September 1880
- Year: 1880
-
- The Spectator, 3 January 1880
- Year: 1880
-
- The Spectator, 26 June 1880
- Year: 1880
-
- The Spectator, 30 August 1879
- Year: 1879
-
-
- The Spectator, 20 December 1879
- Year: 1879
-
- The Spectator, 4 May 1867
- Year: 1867
-
- The Spectator, 8 November 1879
- Year: 1879
-
- The Spectator, 13 March 1880
- Year: 1880
-
- The Spectator, 27 April 1867
- Year: 1867
-
- The Spectator, 7 February 1880
- Year: 1880
-
- The Spectator, 10 July 1880
- Year: 1880
-
- The Spectator, 6 September 1879
- Year: 1879
-
- The Spectator, 11 May 1867
- Year: 1867
-
-
- The Spectator, 28 December 1878
- Year: 1878
-
- The Spectator, 18 December 1880
- Year: 1880
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 8 February 1879
- Year: 1879
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 27 September 1879
- Year: 1879
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 1 November 1879
- Year: 1879
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 11 September 1880
- Year: 1880
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 3 January 1880
- Year: 1880
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 26 June 1880
- Year: 1880
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 30 August 1879
- Year: 1879
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- Scientific American (Supplement), 28 January 1899
- Year: 1899
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
-
- The Spectator, 20 December 1879
- Year: 1879
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 4 May 1867
- Year: 1867
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 8 November 1879
- Year: 1879
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 13 March 1880
- Year: 1880
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 27 April 1867
- Year: 1867
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 7 February 1880
- Year: 1880
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 10 July 1880
- Year: 1880
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 6 September 1879
- Year: 1879
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- The Spectator, 11 May 1867
- Year: 1867
- Publisher: The Spectator
- Language: English
- Place of Publication: London
-
- Scientific American (Supplement), 4 February 1899
- Year: 1899
- Publisher: Scientific American
- Language: English
- Place of Publication: New York
-
- The Spectator, 28 December 1878
- Year: 1878
- Publisher: The Spectator
- Language: English
- Place of Publication: London