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ON THE MIGRATION OF THE 



where with the noblest garniture of trees and copiously supplied with rills, 

 and with mould saturated by these rills. 



~t The wading and natatorial birds, generally, make a mere stage 

 of the valley, on their way to and from the vast plains of India and 

 Tibet, the valley being too small, dry, open, and populous for their 

 taste^ — especially that of the larger ones. Some, however, stay with 

 lis for a longer or shorter time, in their vernal and autumnal migra- 

 tions : and some, again, remain with us throughout that large por- 

 tion of the year, in which the climate is congenial to their habits. Of 

 all of them, the seasons of arrival, both from the north and from the 

 south, are marked with precision ; and I am led to conclude from what 

 I have observed here, that the mass of the grallatores and swimmers are 

 found in the plains of India, only during the cold months : for they all 

 arrive in the valley of Nepal, from the north, towards and at the close of 

 the rains ; and all as regularly re-appear from the south, upon, or soon 

 after the accession of the hot weather. In my enumeration of them, 

 therefore, I shall divide the birds into the three classes, above indicated. 



1st. — Of such as usually pass over the valley, seldom alighting, and 

 only for a few hours. 



2d. — Of such as alight and stay with us for a few days ; or, at most, weeks. 



3d. — Of such as seem to seek the valley — not as a caravansary 

 merely, or house of call, for momentary or temporary sojourn in, on their 

 way to some remoter abode — but, as their permanent dwelling place 

 for the entire season. 



f A 4th class will be constituted of such as do not appear to migrate 

 at all ; notwithstanding that all their nearest kindred (so to speak,) do so 

 regularly. 



