At the end of last year, I designed an inquiry about the present state of linguistic typology in the form of a questionnaire. It was an attempt to cover the whole field by formulating the questions which seemed most relevant to it. This questionnaire is reproduced, without modifications, following this preface. In the first days of this year, it was sent to 33 linguists who I know are working in the field. The purpose was to form, on the basis of responses received, a picture of convergences and divergences among trends of present-day linguistic typology. The idea was also to get an objective basis for my report on "The present state of linguistic typology", to be delivered at the XIII. International Congress of Linguistics at Tokyo, 1982.