at the southern end of Lake Päijänne (IENDE LACUS) are mentioned
on maps, such as ANIENPELTO (Anjanpelto), SYSME (Sysmä), ACHAUPE (Akaanpää)
and ASKALA (Asikkala). Details of the northern end of Lake Päijänne
slowly begin to emerge. JEMSE or Jämsä is more or less in the
right place, similarly the centre of the administrative parish of Rautalampi
(RAUTALAMBI) which encompassed almost all of Central Finland and KONNAVESI
(Konnevesi) which was incorrectly located on the wrong side of the watershed.
For makers of maps
the relatively narrow Lake Päijänne, which runs in a north-south
direction, was a highly useful feature. The shape and size of Lake Päijänne
acquired the correct dimensions far earlier than Lake Saimaa, for instance,
which caused mapmakers grey hairs right down to the 19th century.