forster] 
BRITISH ORNITHOLOGY 
215 
ford ; while after 1833 he lived mainly abroad. He died at 
Brussels, February 2 , 1860 . His Pocket Encyclopedia ( 1827 ) 
was compiled from his father’s natural history journals. 
It is doubtful whether this author’s Synoptical Catalogue 
of British Birds ( 1817 ) was his own work or was only an 
adaptation of his relative’s, Edward Forster’s Catalogue ( q.v .). 
Certainly the two are for the most part identical, except 
that T. Forster’s Catalogue has the synonyms from Dr. 
Leach’s Catalogue inserted to each species, and we must 
therefore conclude that he used Ed. Forster’s Catalogue to 
construct a synonymical catalogue ( cf . acknowledgment on 
p. 37 ), and that the original merit belongs to E. Forster. 
*1808. Observations | on the | Brumal Retreat | of the | Swallow. | To 
which is annexed | A Copious Index | to many passages relating 
to this bird, | in Ancient and Modern Authors. | By Philochelidon. 
London : I Printed by W. Philips, I George Yard, Lombard 
Street | 1808. 
Collation — 1 vol. 8vo, pp. 27 + pp. 5 un. 
Idem. “ 2nd edition, with additions,” 1 vol. 8vo, pp. 27 + 
pp. 5 un. London : 1808. 
Idem. 3rd edit., corrected and enlarged. 1 vol. 8vo, pp. xiv 
+ pp. 46. London: 1813. [Carries author’s name.] 
Idem. 4th edit., corrected and enlarged. [In The Pamph- 
leteer, ed. by A. J. Yalpy, Yol. IY., No. vii., Aug. 1814, pp. 431- 
62.] 8vo. This edition carries a separate title, dated 1814, 
which has at foot the words, “ This edition is not published 
separately.” 
Idem. 5th edit. 1 vol. 8vo, pp. xiv + pp. 46. London : 1817. 
Does not differ from 3rd edit. 
Idem. 6th edit. Not so stated on title, but vide preface. Title 
and collation as follows : 
Observations | of the | Natural History | of | the Swallow 
tribe ; | with | Collateral Statement of facts | relative to their | 
migration, and to their brumal torpidity ; | and | a copious table 
of reference to authors. | Illustrated by figures of five species, | 
engraved on wood, by Willis. | To which is added, | A General 
Catalogue of British Birds, | with the Provincial names for each, 
&c., &c., &c. | By Thomas Forster, F.L.S. | &c. | London : | [etc. 
3 lines.] | 1817. 
Collation — 1 vol. 8vo, pp. xv + pp. 97, 5 pi. (uncoloured). The 
Catalogue ascribed on title to T. Forster is paged from 65-97 and 
is the Catalogue of E. Forster (q.v.). At pp. 55-63 is an “ Extract 
from a Journal of Nat. Hist, during several years at Clapton,” 
which was^apparently by E. Forster also. There is another issue 
