Table II.—Earliest Dates of Observation of Birds and Insects in 1900, with the Mean Date for 1876-1899. 
OBSERVED IN HERTFORDSHIRE IN 1900, 
55 
Mean, 
1876-99. 
Jan. 17 
Apl. 12 
Apl. 13 
Apl. 15 
Jan. 30 
Apl. 5 
Apl. 4 
May 7 
May 19 
Odsey 
(Ashwell) 
Apl. 17 
Apl. 26 
May 6 
Oct. 9 
Hitchin. 
Jan. 20 
Apl. 8 
Apl. 22 
Apl. 18 
Oct. 10 
Apl. 18 
May 5 
Har- 
PENDEN. 
Feb. 23 
Apl. 20 
Apl. 21 
Apl. 21 
Apl. 17 
, B ^ 
^ g H 
% S g 
Jan. 23 
Apl. 19 
Apl. 19 
Apl. 22 
May 14 
Oct. 24 
Feb. 24 
Apl. 11 
Apl. 22 
May 7 
June 28 
^ s 
M PH 
Jan. 23 
Apl. 28 
Apl. 23 
Apl. 19 
May 8 
Berk- 
HAMSTED. 
Jan. 20 
Apl. 12 
Apl. 19 
Apl. 20 
May 7 
Oct. 9 
Feb. 23 
Apl. 22 
Apl. 13 
May 26 
Apl. 14 
St. 
Albans. 
Jan. 5 
Apl. 16 
Apl. 18 
Apl. 19 
i B 
X 
o B 
B p 
PQ g 
B 
Jan. 8 
Apl. 20 
Apl. 23 
May 6 
Oct. 29 
Feb. 13 
Apl. 21 
Apl. 21 
Ches- 
ham. 
Apl. 19 
Apl. 21 
Apl. 20 
Oct. 9 
Apl. 20 
Apl. 6 
May 5 
Watford. 
SI § 
B o 
Apl. 21 
Apl. 21 
Apl. 22 
Mar. 5 
Apl. 26 
Apl. 18 
1 The 
Platts. 
Apl. 22 
Apl. 25 
Apl. 29 
Apl. 26 
Weald- 
stone. 
Apl. 24 
Apl. 28 
Oct. 3 
Species. 
Birds. 
Song-Thrush . 
( Turdus musicus ) 
Swallow . 
(Hirundo rustica) 
Cuckoo . 
(Cuculus canorus) 
Nightingale . 
( JJaulias luscinia) 
Spotted Flycatcher . 
(. Muscicapa grisola ) 
Swallow (last seen) . 
(. Hirundo rustica ) 
Insects. 
Honey-Bee . 
{Apis mellifica ) 
Wasp. 
{Vespa vulgaris ) 
Small White Butterfly. 
(. Pieris rapes) 
Orange-Tip Butterfly . 
(. Anthocaris cardamines ) 
Meadow-Brown Butterfly 
{Epinepliile janira) 
