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PREFACE.

h blication of the present Work. To Richard Owen, Esq., Assistant Curator of the Museum
the public

of the Royal College of Surgeons, | | ou
civen at the close of the Work, being the result of investigations
Oo

I am indebted for the elaborate ‘Observations on the

Anatomy of the Toucan 7

instituted by himself expressly for this Monograph. From E. T. Bennett, Esq., Secretary of

the Zoological Society, N. A. Vigors, Esq., M.P., and W. Swainson, Esq., I have received
5 ae

much valuable information.

To Lord Stanley, whose rich collection has been at all times most liberally opened to
facilitate my inquiries, I am indebted for the use of the originals of three of the figures here
delineated. To Professor Lichtenstein I have to express my sincere obligations for permission
to avail myself of the treasures contained in the Royal Museum of Berlin, which has been so
much enriched by his own personal exertions, and which afforded me two species of this family
with which I was previously unacquainted. The fine collection in the National Museum of
Paris was made available to me by M. Geoffroy St. Hilaire and his talented son M. Isidore
St. Hilaire, from both of which scientific gentlemen I received much politeness and attention.
[ have not yet had an opportunity of inspecting the Leyden collection, for which purpose |
expressly visited that city, the stores which are there being, it is to be regretted, so secured as
not to be accessible; but M. Temminck informed me that th

1ey contained no species of this
family unknown to the British and continental museums.