thev frequent some parts of Dartmoor, and breed 

 there ; but leave those haunts about the end of Sep- 

 tember or beginning of October, and return again 

 about the end of March. 



Another intelligent person assures me that they 

 breed in great abundance all over the Peak of Derby, 

 and are called there tor-ousels: withdraw in Octo- 

 ber and November, and return in spring. This in- 

 formation seems to throw some light on my new 

 migration. 



Scopoli's^ new work ( which I have just procured) 

 has its merit in ascertaining many of the birds of 

 the Tvrol and Carniola. Monographers, come from 

 whence they mav, have, I think, fair pretence to 

 challenge some regard and approbation from the 

 lovers of natural historv ; for, as no man can alone 

 investigate all the works of nature, these partial 

 writers may, each in their department, be more 

 accurate in their discoveries, and freer from errors, 

 than more general writers ; and so by degrees may 

 pave the way to an universal correct natural his- 

 tory. Not that Scopoli is so circumstantial and at- 

 tentive to the life and conversation of his birds as I 

 could wish : he advances some false facts ; as when 

 he savs of the Hirundo iirbtca that it does not feed 

 its young after it leaves the nest:" "puUos extra 

 nidum non nutrit." This assertion I know to be 



* "Annus Primus Historico-Xaturalis." 

 141 



