PREFACE. vil

I am similarly indebted, and would here beg to express my thanks to its officers for the many
attentions I have received from them. From most of the public Museums of the Continent
I have received much assistance. To M.Temminck, Director of the Royal Museum at
Leyden, so well known for his valuable works on Natural History, I beg to offer my most
grateful acknowledgments for the assistance he has afforded me, without which my work
would necessarily have been long delayed, and in fact could never have been brought to that
complete state im which I am happy to say it now stands: so great indeed has been the
liberality of this eminent naturalist, that he has even confided new species to my care, and
allowed me to figure and describe them m my work before including them in his own; and
his liberality will, I doubt not, be duly appreciated by the scientific public. In Professor
Lichtenstein of Berlin I have met with another kind and liberal friend, to whom | am indebted
for the use of several of the rarer European Birds, among which were some of the original
specimens collected by the celebrated Pallas. To M. Schreibers and MM. Natterer of Vienna
I am also under great obligations, as well as to the gentlemen connected with the collections
of Paris and Frankfort, who readily afforded me every assistance I required. To the collection
of the Baron Feldegg of Frankfort I have had free access, and to this gentleman I am indebted
for the use of many rarities, and of some species entirely new to science. To William Yarrell,
Esq., I shall ever feel deeply grateful, for the judicious and kind assistance which he has
at all times rendered me, and for the use of many valuable specimens from his excellent
collection. My ever lamented friend, E.T. Bennett, Esq., was at all times much interested
in my publications; I am therefore proud to add my grateful testimony to his varied talents
and kind and amiable conduct upon every occasion ; and of the numerous individuals honoured
by his friendship there is none who more sincerely deplores his untimely decease than myself.
To the Earl of Derby, the Honourable W.T. T. Fiennes, Sir William Jardine, Bart, N. A.
Vigors, Esq., W. H. Rudston Read, Esq., T. B. L. Baker, Esq., J.J. Audubon, Esq., Captain
S. E. Cook, A. Waterhouse, Esq., of Liverpool, Dr. De Jersey, E. Hf. Reynard, Hsq., and to
several other gentlemen my thanks are likewise due, for the warm interest which they have
at all times taken in the present work. Neither must the valuable assistance afforded me
by Mr. Martin of the Zoological Society be forgotten. In conclusion I would beg leave to
return my grateful thanks to the whole of the subscribers for the support with which they have

been pleased to favour me.