404 Mr. H. Seebohm — Nut.es on 



north as Scotland, it does not reach the bridge which connects 

 Ireland with Great Britain, and consequently it does not 

 range as far west as Ireland. On the other hand, a migra- 

 tory English bird may range as far north as Scotland without 

 ranging as far west as Ireland. Though the North Channel 

 appears to be the route across which most resident birds in 

 Ireland have originally emigrated from Great Britain, it does 

 not appear to be an important line of annual migration. 

 This generalization from the known facts of distribution is 

 remarkably supported by the observed facts of migration. 

 Summer migrants to Ireland appear to crossover from Wales 

 to the coasts of Wicklow and Wexford. " A marked migra- 

 tory movement might be expected in our north-eastern 

 counties between Scotland and Ireland, where the Channel is 

 narrowest ; but we have no evidence that such is the case. 

 The bulk of the migrants arrive on the southern half of the 

 east coast of Ireland and on the easternmost of onr southern 

 counties ; in other words, along the shore extending from 

 Dublin to Waterford " (More and Barringtou, Report on 

 the Migration of Birds, ii. p. 120). 



Mr. Ussher was kind enough to get me a nestling Heron 

 (Ardea cinerea), which obliges me to modify some of the 

 diagnoses in my Classification of Birds. 



The pterylosis of the nestling Heron a few days old very 

 closely resembles that of the adult, except that the feathers 

 are replaced by down. The spinal bare tract reaches from 

 the nape almost to the oil-gland, and is absolutely naked. 

 The two lateral bare patches on the lower back are also very 

 conspicuous. On the under surface the ventral bare space is 

 well marked from the chin to the vent. 



II. Great Saltee Island. 

 I am indebted to the kindness of John N. White, Esq., of 

 Waterford, for an opportunity of visiting the Great Saltee 

 Island, which is one of the most interesting breeding-places 

 of Sea-fowl which I have ever seen. It lies about four miles 

 due south of Forlorn Point, on the south coast of county 

 Wexford, and about thirteen miles due east of Hook Head, 



