A one-month study of all consultations and referrals to medical specialists and other community resources made by 39 family physicians was undertaken in London, Ontario, in the spring of 1975. Eight physicians were in practice in the community and 31 were staff physicians or residents in family medical centers associated with the Department of Family Medicine of the University of Western Ontario, London. Rates of referral per 100 office visits are calculated and examined according to physician experience and location of practice. The reasons given for referral and for choosing the specific consultant or agency are also analyzed. Referral rates are compared with previous studies.