502 Zoologia* 



Ariimalia liyeme fopita. 

 Sever yn L Bruyn. 



On the retreat of f wallows and the torpid Itate of certain 

 , animals in winter. 



Memoirs of the American Acad, Vol. 2. P. 1. p. §6. 



Hibernacula Hirundinum (dixbia). 

 Peter Coll in son. 



A letter concerning the migration of fwallows. 

 Philof. Transact. Y. 1760. p. 45^. 

 Franz Carl Achard. 



Remarks on- fwallows on the Rhine. 

 Ibid. Y. 1763. p. 101. 

 James Cornish. 



Of the torpidity of fwallows and martins. 

 Ibid. Y. 1775. p. 343. 

 Samuel Dexter. 



On the retreat of Houfe - fwallows in winter. 

 Memoirs of the American Acad. Vol. 1. p, 494. 

 Aja Packard. 



On the retreat of fwallows in winter. 

 Ibid. Vol. 2. P> 1. p. 93. 

 Severyn L Bruyn. 



On the retreat of fwallows 3nd the torpid ftate of certain 

 animals in winter. 

 Ibid; Vol. 2, P. 1. p. 96. 

 Guftaf von Carlson. 



Anmarhningar om fvalor. 



Vetenskaps Academ. Nya Handl. A. 1759. S. 315. 

 Bern erkun gen iiber Schwalben. 



Neue Schwed. Akadem. Abhandl. J. 1739. S. 301. 



Migrationes Avium. 



William Derham. 



Letter concerning the migration of birds. 

 Philof. Transact. Y. 1703. p. 123. 



Mark 



