p. 130, 1830). — The late Departure of the Swallow in 1842 

 (The Zoologist. p. 101, 1843). 



Briggs (J. J.). On the congrégation of Swallow. (The Zoologist. 

 p. 4558, 1855). — Note of the Destruction of Swallow by 

 the Severity of the weather (Ibid. p. 4808). 



Bruyn (S.). A Letter on the Retreat of the Swallows and the 

 torpid State of certain animais in winter (M.em. Ani.Ac. I, p. 96, 

 1793). 



Carlson (G.). Anmârkningar om Svalor (K. Y et. Ak. nya 

 Handl. p. 315, 1789. — Kônigl. Schwed. Ak. Wiss. Abhandl. 

 p. 301, 1798). 



Carmichael (Me Intosch W.). On a curious Fact respecting 

 the Swallow (Edinb. phil. Journ. I, p. 420, 1829. — Isis, p. 589, 

 1832). 



Gassin (J.). Catalogue of the llirundinidœ in the Collection 

 of the Academy of Nat. Se. of Philadelphia (Proc. Ac. nat. Se. 

 Philad. p. 203, 1854). 



Cellarius (J. Th. R.). et Gellarius (J. L.). Epistola de Hirundi- 

 num Historia naturali et medica. Helmstadii, 1764, in-â. 



GlifTe (H.). Note on the Swallow' s Course over the Atlantic. 

 (The Zoologist. p. 567, 1844). 



Gollinson (P.). A Letter concerning the migration of Swallows 

 (Philos. Trans. II, p. 459, 1760). 



Dawson (J. F.). Swallows never seen at the Garron Iron-works 

 in Winter (The Zoologist. p. 1297, 1846). 



Dexter (S.). On the Retreat of House-Swallows in Winter 

 (Mem. Amer. Ac. I, 494, 1785). 



Dupuits. Sur le de'part des Hirondelles (Ami. Se. phys. nat. 

 agric. Lyon. 3 e sér. YI, 1862. Procès verbaux, p. LXXIX). 



Eliis. Ueber das Betragen von Schzvalben (Isis, p. 696, 1832. — ■ 

 Edinb. Journ. p. 296, 1828). 



Ellman (J. B,). Late Stay of Swallows, Hir. rustica (The Zoo- 

 logist. p. 2392, 1849). 



Fitton (E. B.). Swallows hibernating in the Cliff at Hastings 

 (The Zoologist. p. 2590, 1849). 



Forster (J. W.). Observations on the brumal Retreat of 



