[8]. Humane Science Lectures: Summary of address given by Prince Kropotkin at Essex Hall, November 17, 1896.

[9]. "Study of Animal Life."

[10]. "Evolutional Ethics and Animal Psychology."

[11]. Wollaston, "Religion of Nature," 1759.

[12]. December 29, 1898.

[13]. Fortnightly Review, November, 1895.

[14]. The Ethical World, May 7, 1898.

[15]. Ibid.

[16]. Fortnightly Review, November, 1895.

[17]. Illustrated London News, May 14, 1898.