A paper on THE CHU CONSTRUCTION AND COFREE MODELS OF CLASSICAL LINEAR LOGIC by Dusko Pavlovic is available by anonymous FTP from triples.math.mcgill.ca. The files chu-{A4,US}.{dvi,ps}.Z are the directory pub/pavlovic. Each of them contains the whole paper, but in various formats. This version supersedes the previous ones, that I had sent to some people. Abstract We describe a couniversal property of the Chu construction. It induces a comonad on a category of autonomous categories. *-Autonomous categories are exactly the coalgebras for this comonad. The models of full classical linear logic (with the exponentials) are then obtained as the coalgebras on the models of intuitionistic linear logic --- this time for a comonad derived from the Chu construction. In view of the computational interpretations of linear logic, these results suggest an interesting connection of the functional and the concurrent programming. For this reason, some effort has been spent to make all the constructions effective. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++