Citation indexing

The delay irrpublication of scientific papers is a constant source of frustration for their authors. Perhaps no segment of the literature is subjected to greater publication delays than that which eventually appears in the bound volumes emanating from international meetings and symposia. In May 1969, 1 presented a paperl which brought together much of my theoretical and practical work on the subject of indexing. During the twenty months it took to publish that work I was not scooped, as so often happens these days, but a number of developments did take place which made it obsolete without an appropriate supplement. I tried to rectify the situation by publishing a short paper in Naturez which has been reprinted in Current Currents ” 3. Indeed, the subject has been anonymously editorialized (a regrettable practice) in Natureq and amplified by Cawkells. I in turn have responded to the challenge with a letterG whose publication has been delayed by the British postal strike. Of even