Letter from John Dalton to Peter Crosthwaite

Enclosing copy of his journal and discussing the extra column for "the tides of the air" and their possible influence on the weather and the aurora borealis. Mentions difficulty in obtaining a thermometer and notes differences in barometer readings. Has heard from a friend of an article "in Manuscript at the end of Dr Johnson's tour to the Hebrides" giving the heights of various hills in the Lake District which are odds with calculations made by "Donald".