XY. 
REPORT ON PHENOLOGICAL PHENOMENA OBSERVED IN 
HERTFORDSHIRE DURING THE YEARS 1889 AND 1890. 
By John Hopkinson, F.L.S., F.Gr.S., etc., President. 
Read at Watford, \0>th March, 1891. 
The Phenological Stations from which returns have been received 
for the years 1889 and 1890 are the same as those for which records 
of the dates of flowering of plants were given in the principal table 
for the years 1887 and 1888, the two stations, Ware and Odsey, 
for which there was a supplementary table in the previous report, 
disappearing from our list. Our present phenological stations are 
therefore as follows :— 
River-basin. Station. 
N. 
Lat. 
W. 
Long. 
Observer. 
Colne ... 
j St. Albans . 
. 51 
45 
0 
20 
Mrs. J. Hopkinson. 
‘ \ Harpenden . 
. 51 
48 
0 
21 
Mr. J. J. Willis. 
Lea . 
.. Hertford . 
. 51 
48 
0 
5 
Mr. W. Graveson. 
Ivel . 
.. Hitchin . 
. 51 
57 
0 
16 
Natural Hist. Club. 
Although details of the observations of Insects and Birds no 
longer appear elsewhere, in order to economise space the plan 
adopted in previous reports is followed in this one, the earliest 
observations only being recorded. 
Earliest Dates oe Observations of Insects, Birds, etc., in 1889 
AND 1890, WITH THE MEAN DATE FOR 1876-88. 
No. 
Phenomena. 
1889. 
1890. 
Mean. 
84 
Insects. 
Apis mellijica (honey-bee) ap. 
Jan. 26 
Jan. 19 
Jan. 27 
85 
Vespa vulgaris (common wasp) ap. 
May 6 
Mar. 16 
Apl. 7 
86 
Pier is Brassicce (large white butterfly) ap. 
Apl. 11 
Mar. 28 
Apl. 9 
87 
P. Rapce (small white butterfly) ap. 
May 5 
Apl. 5 
Mar. 29 
88 
Antlxocaris cardamines (orange-tip) ap. 
May 22 
May 25 
May 5 
89 
JEpinephele Janira (meadow-brown) ap. 
Apl. 26 
Apl. 29 
May 22 
91 
93 
Birds. 
Syrnium Aluco (tawny owl) hoots... 
Turdus musicus (song-thrush) sg. 
Mar. 31 
Jan. 10 
Jan. 16 
Apl. 5 
Jan. 12 
95 
Paulias Luseinia (nightingale) sg. 
Apl. 23 
Apl. 16 
Apl. 14 
99 
Alauda arvensis (sky-lark) sg. 
Jan. 26 
Jan. 12 
Jan. 17 
101 
Corvus frugilegus (rook) builds . 
Mar. 2 
Mar. 4 
Feb. 23 
102 
Cuculus canorus (cuckoo) calls . 
Apl. 22 
Apl. 4 
Apl. 12 
103 
Mirundo rustica (swallow) arr. 
Apl. 23 
Apl. 14 
Apl. 11 
104 
Chelidon urbica (house-martin) arr. 
Apl. 30 
May 11 
Apl. t 20 
108 
111 
112 
Turtur communis (turtle-dove) coos . 
Grex pratensis (corncrake) arr... 
Amphibian. 
Rana temporaria (common frog) spawns . 
May 4 
Apl. 27 
Mar. 24 
Mar. 12 
Mav 4 
Ap t. 25 
Mar. 13 
ap.—first appears, arr.—arrives, sg.—song commences. 
