Memoir of the Maryuis of Tweeddale. 225 



with his military duties aud other matters to be able to do 

 much scientific work. lu 1854 he accompanied the army 

 sent out to Turkey^ and thence to the Crimea, and took part 

 in the campaign which resulted in the fall of Sebastopol. In 

 1866 Lord Walden finally retired from active service, and 

 commenced anew a collection of birds and ornithological 

 books in a house which he built for himself at Chislehurst, 

 and which was for the ten following years his habitual 

 residence. As will be seen from the list given below_, he 

 became a frequent contributor to ' The Ibis/ to the Zoological 

 Society's 'Proceedings'' and 'Transactions/ the 'Annals of 

 Natm'al History/ and other periodicals, paying special atten- 

 tion to the birds of India and the Eastern Archipelago. In 

 1868 Lord Walden, upon the death of Sir George Clerk, was 

 elected President of the Zoological Society of London, of the 

 Council of which he was already a member, and retained this 

 office, of which he performed the duties with the greatest zeal 

 and success, until his death. 



On the death of his father at a very advanced age in 1876, 

 Lord Walden succeeded to the peerage and estates, and trans- 

 ferred his home and collections to the ancestral seat of Yester, 

 in East Lothian, where he subsequently passed the greater 

 part of his time. Dm-iug the past two years Lord Tweeddale 

 devoted special attention to the investigation of the avifauna 

 of the Philippine Ai'chipelago. Mr. A. H. Everett, a well- 

 known collector, was specially engaged to visit the different 

 islands of this group and make collections of their birds ; and 

 the results were given to the public in a series of thirteen 

 papers published in the Zoological Society's ' Proceedings,' 

 the last of which was finished only a few days before the 

 death of the author. 



Another important piece of ornithological work recently 

 undertaken by Lord Tweeddale was the editing, with notes 

 and additions, of the part relating to the birds of Blyth's 

 Catalogue of the Mammals and Birds of Bm-ma, which was 

 left in a very unfinished state at the author's decease. Under 

 Lord Tweeddale's "able and conscientious treatment," to 

 use the words of Mr. Grote, the catalogue became a complete 



