Tucson, Sunday Jan 25, 1920. The days are getting longer and warmer. During the middle of the day it is almost hot, but the nights remain cool. Dr Far have given lectures. Now the first semester is at end, and this week is devoted to examinations. Not until I begin to lecture again. Most of the time I am in the Room in Bed. Dr Far have written 7 chapters. They will not go slow, but hope to finish the little book before I go back to New Haven. To morning Jan. 31 I go with Stogams and Lobber to the Balluna Mt's, about 100 miles E of N. of Tucson.