Concord, June 7. 1904
  Cloudy, calm, humid & rather sultry. Heavy
thunder shower about 3 A.M.
  Spent day working in the shed with Forbush.
We arranged the tools on the wall in the
upper room a task of no slight difficulty.
Although we made a great racket the Bats were
not disturbed. There are fifteen of them now.
  Walked to Ritchie Place at evening.
  To my surprise a Black-poll Warbler
was singing most of forenoon in the trees near the 
house.