Letter, 26 November 1855
Letter, 1 December 1855
Letter, 8 December 1855
Letter, 25 March 1856
Letter, 5 April 1889
Letter, 23 April 1889
Preliminary notes on new species of sponges from the Quebec group at Little Métis
Letter, 11 September 1880
Notes, December 1884
Notes, December 1884
Letter, 2 July