1. Command Paper 2836 (HMSO, London, 1965).
2. Command Paper 2836, para. 228, 61 (HMSO, London, 1965).
3. Times, Sept. 20 (1969).
4. Rogers Brambell, F. W., et al., Times, June 23 (1969).
5. The Assessment of Pain in Man and Animals (edit. by Keele, C. A., and Smith, R.) (Universities Federation for Animal Welfare, London, 1962).