Table II. —Earliest Dates of Observation of Birds and Insects in 1901, with the Mean Date for 1876-1900. 
OBSERVED IN HERTFORDSHIRE IN 1901 
139 
Mean. 
Jan. 17 
Apl. 12 
Apl. 13 
Apl. 15 
May 13 
(8 years) 
Oct. 18 
(10 years) 
Jan. 31 
Apl. 6 
Apl. 5 
May 7 
May 19 
Odsey 
(Ashwell) 
Apl. 18 
Apl. 27 
Apl. 21 
May 27 
Oct. 12 
fi 
M 
o 
H 
w 
Apl. 16 
Apl. 21 
Apl. 12 
May 20 
3 9 
W 1 
Ph 
Jan. 21 
Apl. 8 
Apl. 20 
Apl. 20 
Apl. 22 
Apl. 8 
May 28 
« « M 
fe Cs H 
? S « 
02 g 
W p 
Jan. 2 
Apl. 13 
Apl. 21 
Apl. 20 
Apl. 22 
Oct. 23 
Feb. 28 
Apl. 21 
Apl. 18 
May 12 
June 17 
Hat¬ 
field. 
Feb. 26 
Apl. 23 
Apl. 22 
Apl. 12 
May 8 
i p 
g B 
Ph 03 
Feb. 15 
Apl. 9 
Apl. 18 
Apl. 21 
May 12 
Sept. 27 
Feb. 28 
Apl. 22 
Apl. 19 
May 12 
June 30 
St. 
Albans. 
Jan. 19 
Apl. 19 
Apl. 5 
Apl. 11 
■ m 
X £ 
o 
Ph p. 
W § 
PQ 
Jan. 16 
Apl. 8 
Apl. 16 
Apl. 6 
May 13 
Oct. 13 
Feb. 12 
Mar. 26 
Apl. 7 
Ches- 
HAM. 
Apl. 15 
Apl. 18 
Oct. 8 
May 13 
May 14 
s 
s 
£ 
s g 
H O 
£ * 
Apl. 10 
Apl. 21 
Apl. 22 
Oct. 10 
Feb. 28 
Apl. 20 
Apl. 7 
May 14 
m 
W ^ 
H 3 
Ph 
Jan. 5 
Apl. 18 
Apl. 16 
Apl. 20 
Sept. 7 
Apl. 20 
(h . 
W PP 
w 5 
« ^ 
O i-3 
Apl. 20 
Apl. 20 
Apl. 17 
Oct. 5 
Apl. 21 
Species. 
Birds. 
Song-Thrush . 
( Turdus musicus ) 
Swallow . . ..... 
(Hirundo rustica) 
Cuckoo . 
(Cuculus canorus) 
Nightingale.. 
(. Daulias luscinia ) 
Spotted Flycatcher. 
(. Muscicapa grisola ) 
Swallow (last seen) . 
( Hirundo rustica) 
Insects. 
Honey-Bee . 
(Apis mellifica) 
Wasp. 
(Vespa vulgaris ) 
Small White Butterfly..... 
(Fieris rapes ) 
Orange-Tip Butterfly . 
(Anthocaris cardamines ) 
Meadow-Brown Butterfly 
(JEpinephile janira ) 
