1. Reminiscences of Marx and Engels348–349. Moscow (n.d.
2. Marx' und Engels' Auseinandersetzung Mit Darwin
3. Nethercot , Arthur H. 1960.The first five lives of Annie Besant175–175. Chicago The file ofThe national reformerin the New York Public Library does not go beyond 1879; it contains five of the six issues in which Aveling's series of articles, ‘Darwin and his views’, were published. I have therefore not been able to confirm the twenty-nine instalments to which Mr. Nethercot refers.
4. Tribe , Compare David . 1971.President Charles Bradlaugh, M.P.124–124. London 126, 127; Max Beer,Fifty years of international socialism(2nd impression: 1937, London), 74.