44 Meetings of Section II, 



14. Stefan Chernel von Chernelhàza : On the Variety 

 in the colouring of Colymbus cristatus, G. griseigena, and G. 

 nigricollis observed at the Lake of Yelencze in Hungary. 



This paper gives an account of the method employed in 

 shooting the vast numbers of birds on this large lake, and 

 contains the names of the principal species to be met with 

 there. Descriptions are given of albino, or partial albino 

 exanrples of Golymbus cristatus, and G. griseigena and G. nigri- 

 collis and of a melanistic variety of G. cristatus. 



The meetings of this Section were then brought to a close. 



SECTION II. 



Migration. 



Tuesday, June loth. 



The President, Mr. Otto Herman, in the chair. 



The President opened the section with the following 

 observations upon the methods to be employed in observing 

 migration : — 



If we want to grasp the principle of migration it soon 

 becomes evident that this phenomenon appertains to 

 pheenology, and is therefore in organic connection with 

 meteorology. As migration is a phenomenon of movement 

 it is obvious that even the most elaborate local observations 

 can only further the solution of the problem, and that a 

 definite solution will only be arrived at by systematic 

 observations extending as far as possible over the whole 

 area covered by the migrations. The methods — lucus a 

 non lucendo — hitherto followed cannot therefore lead to any 

 positive result, and ought to be altered. Just as meteorology 

 has reached its great results by uninterrupted systematic 

 observation and the methodical working out of the informa- 

 tion thus acquired, so must Ornithophsenology be studied 

 if it is to bring forth any definite results. Our chief aim 

 should therefore be the organisation of a uniform process 

 and an attempt to carry it out as far as possible. We must 



