1881 
General Observations. 
Middlesex ' County, Mass. 
(Oct.21) A clear, absolutely calm day with heavy white frost 
in the morning, a warm rnsllov: noon, and a peaceful, 
glowing sunset. The baloon spiders out in force on 
Concord River; we saw many spinning along on the water 
tne silk baloon acting as a sail. Others were wafted 
across the river at a moderate height in the air; while 
some v/ere a hundred feet or more above the earth, and 
drifted off over the woods, or passed only slightly be¬ 
low us as we sat on the cliffs. 
1875.• I 
July 30, The smaller birds are in largo flocks now in the 
v/oods, just as in Maine. To-day I saw Sparrows, Warb¬ 
lers, Titmice, Woodpeckers etc., mingling together, of¬ 
ten as many as a hundred individuals being collected into 
one great flock. Pov/ birds were singing in the woods. 
I heard one Tanager and an Indigo Bird. Field Sparrows, 
however, were singing regularly. Pew if any of the 
birds have left us as yet; except, possibly, the Swal- 
loY/s f/hich seem to be getting scarcer. 
