Scientific Intelligence. — Zoology. 203 



Campbell, light-house-keeper at Isle of Glass, to Mr Stevenson, 

 engineer for Northern Lights. — 31^^ October 1829. 



30. Thompso7i's Zoological Illustrations. — The third num- 

 ber of Dr Thompson's " Zoological Illustrations and Re- 

 searches" is nearly ready for publication. It contains a memoir 

 on the Cirripedes or Barnacles, shewing their deceptive charac- 

 ter, the remarkable metamorphoses they undergo, and proving 

 that they belong to the class Crustacea. The same number 

 also contains observations on the genus Nebalia of the class 

 'Crustacea, with an illustrative plate. In volume 6th of the 

 new series of this Journal, at page 398, we noticed from the 

 Zoological Journal, the discovery in the Caribbaean Seas, by Mr 

 Landsdoun Guilding, of a new species of recent Encrinus. Mr 

 Thompson, in the present number of his Illustrations, however, 

 as we are informed, has proved it to be a Comatula, and main- 

 tains that no crinoidal animal has been found since he discovered 

 the Pentacrinus europaeus. We may add, that Heusinger, 

 who is about to publish his observations on the Comatulse of 

 the Mediterranean, is disposed to consider Dr Thompson's Pen- 

 tacrinus as a species of Comatula. 



31. The third volume of' PoWs great xvork, and on the ani- 

 mal of Argonauta Argo. — The well-known Professor Stefano 

 delle Chiage, a scholar of Poli, will, we understand, publish 

 the continuation of that celebrated naturalist's work under the 

 title Poli Testae, utr. Sic. tom. iii., cum additamentis et anno- 

 tationibus, Stephani delle Chiage. Carus, who paid Chiage a 

 visit some time ago, saw several of the engraved plates of the 

 work ; one of them, which displayed the shape, anatomy, and 

 ova of the Argonauta Argo, he considered particulai'ly interest- 

 ing, because it exhibited, in embryo, within the ovum, the ru- 

 diments of the shell in which the animal lives, by which the 

 question, whether the dehcate shell in which the animal lives is 

 its own or one foreign to it, is most satisfactorily answered. 



32. Humming Bird and Insects at a great height on the Vol- 

 cano of Orizaba. — Schiede and Deppe, on their ascent of Orizaba, 

 observed, at a height of 10,000 feet above the sea, the Humming 

 Bird (Trotthilus) flying round the orange-coloured flowers of 

 the Caslilligen. At a height between 14,000 and 15,000 feet, 

 on the same mountain, above the region of grasses, &c. they 



