ORNITHOLOGY IN 1850. 
part. The monograph completed by the publication of the third 
part, is that of the Odontophorine, or American Partridges, 
considered a few years since as forming a group of birds very 
limited in numbers, but which is found in the present work to con- 
tain thirty-five species, all of which are well figured and described 
on thirty-two plates, and at a price of eight guineas. The mono- 
graph which has been commenced, is that of the Trochilide or 
Humming Birds, of which one part only has been published. It is 
a subject of great extent, and at the same time of great interest. 
The figures which have been published are perhaps the most success- 
ful that Mr. Gould and his artist, Mr. Richter, have yet accom- 
plished, both in the delicacy of the drawing and the accessaries to 
the figures, and in the representation of the changing colours, which 
has been attempted by a particular process, both in the printing and 
colouring, The new work which Mr. Gould has undertaken, is the 
most important,in a general view, as it embraces the Ornithology of 
one of the quarters of the world, almost an entire zoological proyince, 
“The Birds of Asia.” ‘Tt is intended,” he writes in his prospec- 
tus, “ that the present work shall embrace the Birds of the Asiatic 
Continent only; to attempt to include in it the Ornithology of the 
Indian Archipelago, New Guinea, the Moluccas and the islands of 
the Southern Ocean, would be an act of temerity ; somewhere a 
line of demarcation must be drawn, and here the author will confine 
himself, not too rigidly, within the continental boundary. Many 
Species, common alike to India and Europe, and to India and 
Australia, have been already figured in his ‘ Birds of Europe’ and 
‘Birds of Australia ;’ these of course will not be delivered to the 
Possessors of those works unless especially demanded at the close 
be less voluminous 
of the publication, and hence to them it will 
mK expensive than might be at first inferred from such a title as 
The Birds of Asia.’” 
two parts have been published during the past year, each con- 
taining seventeen plates, and in each a portion is more particularly 
devoted to the illustration of some particular genus, thus in Part I. 
Sitta is illustrated, in Part I. Nectarinia. The contents of these 
two parts are— 
