Concord April 3 1904
  Clear with exceedingly chill & very strong 
N.W. [northwest] wind.
  To Ball's Hill in A.M. rambling about the
woods there for several hours. Went over nearly
the same ground with Kirkagard (the nurseryman)
in P.M. Saw numbers of Fox Sparrows but
few other birds.
  First Wood Frog (only one) croaking early this
afternoon in the pool below the orchard. No 
Hylas as yet.