206 Miscellanies. 
where we saw them, and put on it the topography of the Coteau 
des Prairies as he supposes it, for great distances north, west, and 
south of where we saw it. The public will now understand, not 
my surprise at the course pursued by Mr. G, W, Featherstonhaugh, 
for Lam not surprised, but my indignation that he should thus ap- 
propriate a portion of my labors without acknowledgment. 
Under such circumstances, I deem it a duty to myself and the 
scientific public, to denounce Mr. Featherstonhaugh to the world, for 
this, as one instance of his appropriating the labors of others to his 
own uses without acknowledgment. _W.W. Marner. 
21, New Silk Worm.—At Maragnan and Rio Janeiro are several 
species of Bombyx, the caterpillars of which enclose themselves in 
a cocoon, after having spun a thicker and stronger silk than that of 
the ordinary silk worm. It has been tried by Padre Mestre, and 
forms avery solid material. A species of mulberry, the fruit of 
which is small and inedible, grows near Rio Janeiro, which it is pro- 
posed to cultivate for feeding the caterpillars.—Atheneum, May, 
1837. 
22. New Voyage round the World.—The King of the French 
has, by a decision of the 26th of March, approved of a proposal of 
the Minister of the Marine, for a new voyage round the world, the 
conduct of which is to be confided to Capt. Dumont d’Urville. Two 
vessels are to be employed in this expedition: the Astrolabe, com- 
manded by Capt. d’Urville, and the Zélée, by Capt. Jacquinot. 
These vessels were to sail from Toulon.at the beginning of September 
last. After a short stay at the Cape Verd Islands, they will go to 
the South Polar Sea, passing between Sandwich land and New 
Shetland, in order to explore those seas, in which Weddel alone 
seems to have been able to reach the 74th degree of south Jatitude. 
The expedition will extend its researches towards the Pole as far as 
the ice may allow; then, turning back towards the north, M. d’Ur- 
ville will pass through Magellan’s Straits, where, notwithstanding the 
labors of Capt. King, it is believed that an ample harvest of discov- 
eries still awaits the navigators who may explore them, The island 
of Chiloe, to the west of Patagonia, will then be carefully examined 5 
after which the expedition will go to Valparaiso, to give the crews 
the repose they will require, and to make such repairs as may be 
necessary to enable the vessels to prosecute their voyage. Leaving © 
