Heavy killing frost Concord.
Ther [Thermometer] Tuesday, Sept. 11, 1917 [September 11, 1917] Wea [Weather]
28 [degrees] First northern breeding Warblers Fine
Brilliantly clear with light northerly
wind. Hard frost & over night water in
pans freezing to window glass thickness.
Immense damage to tender flowers &
vegetables but some of ours in
sheltered places escaped all harm. Grapes
but little injured. Corn mostly ruined.
First obvious south-bound flight of
Warblers breeding further north. Small flock
of them ranging along edge of Run near
Pulpit Rock & thence into Birch Field
contained a Nashville [Nashville Warbler], Cape May [Cape May Warbler] (juv [female juvenile]),
2 young Black-polls [Blackpoll Warbler], 2 [young] Bay-breasts [Bay-breasted Warbler],
one Blackburnian [Blackburnian Warbler] (juv [female juvenile]), a Mniotilta,
2 Redstarts (one ad. [adult male]), 1 Black-thr.
Green [Black-throated Green Warbler]. Four more of last-named species,
a Peabody bird, 4 Chippies [Chipping Sparrow], a Song Sp.[Song Sparrow],
a Towhee, 3 Robins, 3 Cat birds & a 
Brown Thrasher, in or near dooryard.
  Spent much of day in house
writing. In woods at Pulpit Rock &
Birch Field 8-10 A.M., 2-4 P.M.
Timmy with me both times. He 
seemed spiritless there & is obviously
ill this evening with fits of nausea,
shivering, & stomach pain.

Concord.
Ther [Thermometer] Wednesday, Sept. 12, 1917 [September 12, 1917] Wea [Weather]
32 [degrees] Recent scarcity of small birds Fine.
Cloudless with light S.W. [southwest] wind. Early
morning almost as cold as that of
yesterday with hoar-frost whitening grass.
Middle of day delightfully warm with
Cicadas "frying". Evening calm & mild.
  Comparatively few birds save close about
house where a Tennessee [Tennessee Warbler], a Nashville [Nashville Warbler] &
Black-thr. Green Warbler [Black-throated Green Warbler] visited the locusts
at 7 A.M. while 5 Robins, 3 Cat birds
& 3 Cedar birds were feasting on elder
berries & a Maryland Yl. thr. [Maryland Yellow-throat] flitted this
flower bed in which were also 3 Peabody
birds. The flowers attracted a Hummer [Hummingbird]
later. Brown Thrasher near head of lane
& half a dozen Chippies [Chipping Sparrow] in orchard
Nighthawk flying high W. [west] 10 A.M.
Woodland barren of all bird life save
for an occasional unseen, chirping Warbler
No bird of any kind to be found in Birch F. [Birch Field]
Timmy started 2 young Grouse in Run.
  Spent most of day in Pulpit Rock
woods. George & Zeph cutting down trees,
Monson & son working on roads
Timmy with me at all P.M. He is much 
better although still weak & spiritless.