  The study and publication of historical scientific manuscripts are com- plex
tasks that involve, among others, the explicit representation of the text mean-
ings and reasoning on temporal entities. In this paper we present the first
results of an interdisciplinary project dedicated to the study of Saussure's
manuscripts. These results aim to fulfill requirements elaborated with
Saussurean humanists. They comprise a model for the representation of
time-varying statements and time-varying domain knowledge (in particular
terminologies) as well as imple- mentation techniques for the semantic indexing
of manuscripts and for temporal reasoning on knowledge extracted from the
manuscripts.
