341 
Prince Maximilian of Wied-Neuwied. 
fore sleep could be indulged in, their collections must be dried, 
their sketches finished, and their packages completed. Many of 
the party, we are told, were never free from disease ; for months 
they were in a state of fever, and yet still continued, under the 
animating and enthusiastic example of the Prince, to travel on- 
wards. 
The result of this remarkable journey, has been the collection 
of a more curious and extensive series of observations, and of the 
natural productions, of Brazil, than has been made since the 
days of Prince Moritz. W e are informed, that Prince Maximilian 
has brought, amongst other collections, the following with him 
to Neuwied : A series of human skulls of the different tribes of 
' savages, and also those of several quadrupeds, which have not 
hitherto been examined by naturalists ; 76 different species of 
quadrupeds ; about 400 distinct species of birds, of which there 
are 2,500 specimens ; 79 different species of amphibious animals, 
particularly many beautiful snakes ; upwards of 5000 insects, 
of which many are entirely new ; a few shells and fishes ; 
5000 plants, and a vast collection of seeds ; and a portfoho of 
200 drawings, made by the Prince, of scenery, different tribes 
of savages, and other objects of natural history. 
We are happy to learn that the Prince of Neuwied has announ- 
ced his intention of publishing an account of his travels, and of 
the various objects of natural history he has met with, in four 
volumes quarto, with maps and plates 
Art. XIX. — Accoujit of the Method of colouring Agates. By 
John MacCulloch, M. D. M. G. S. Lecturer on Chemistry 
to the Board of Ordnance, &c. In a Letter to Dr Brewster. 
In compliance with your request, I here send you the circum- 
stances which I am able to recollect respecting the colouring of 
* We have just seen a W'ork in two volumes quarto, published at Rio de 
Janeiro, in 1817, entitled “ Corographica Brazilica,” certainly the most impor- 
tant literai'y production which Brazil has hitherto afforded. It contains a pretty 
liccurate description of the geography of the country, of its various tribes of origi- 
nal inhabitants, and treats fully of its moral and political condition ; but the na- 
tural history is considered in a superficial and unscientific manner. — Ed.. 
