Notices and Proceedings of Scientific Societies, 207 



natural history, while its collections are already extensively numerous and 

 valuable." 



Meeting of German Naturalists at Hamburgh. (Zoological Section 



concluded.) — Fourth Sitting 23cf Sept. — Dr Bergman exhibited several 



preparations of the brain. Professor Otto read a treatise by Stannius, 

 a student of Hamburg, on the anatomy of the Amphinome rostrata. 

 Professor Schulze, from Freiburg, exhibited preparations of the hearts of 

 the Ringed snake (Ringelnatter.) Von Olfert, from Berlin, made some 

 observations on Medusce. Professor Otto made some remarks on cer- 

 tain skinny, tendinous, and vessel-like substances, occasionally passed by 

 dyspeptic people. Professor Schultze laid before the meeting his treatise 

 on the molecules of Mr Robert Brovm, wdth an especial reference to 

 Ehrenberg's rejection of the doctrine of equivocal generation. Dr Berendt, 

 from Dantzic, intimated to the members, that he vrould be happy to exhibit 

 to them his rich collection of insects in amber. Professor Homschuch, 

 from Griefswalde, made several remarks in confirmation of the vievv^s of 

 Professor Schultze, in reference to equivocal generation, Mr Gray, from 

 London, was appointed president for the next sitting. 



Fifth Sitting. — 24:th Sept. — Professor Schultze exhibited, by dissection, 

 several organs in a living snake. (This dissection had chiefly in view to 

 exhibit the circulation of the blue blood.) Professor Homschuch made 

 observations on several rare birds of Pomerania. Justiciary Bore made 

 some remarks on the principles of the separation and formation of genera. 

 Dr Sundewald, of Lund, described a parasitic beetle, found in the body of 

 the Blatta Germanica. Von Winthem, of Hamburg, confirmed this observa- 

 tion by exhibiting the occurrence of the larva of the Tachina pacta in the 

 bodies of the Carahus gemmatus and violaceus. Mr Johnstone, from Edin- 

 burgh, communicated some observations of Mr Stark on the changes of 

 colour in fresh-water fish. Professor Fischer, of Moscow, spoke concerning 

 the use of the musk to the animal itself. Professor Jacobson explained 

 the mode of suction in molluscous animals. Mr Gray, of London, 

 described a new animal from the Cape, belonging to the class rodentia. 

 Von Winthem exhibited a living specimen of the Thomisus leucosia, from 

 Brazil. Dr Steinheim, of Altona, exhibited an embryo of the Squalus 

 acanthias, in which he shewed the double membrane of the yolk bag. Pro- 

 fessor Reinhardt, of Copenhagen, was elected president of the following 

 meeting. 



Sixth Sitting 25th Sept The Secretary having stated that illness 



had prevented Professor Reinhardt from presiding on this day, Professor 

 Jarocki, of Warsaw, was requested to take the chair. Professor Otto read 

 a paper by Professor Muncke, of Heidelberg, on infusoria. Surgeon 

 Rosenfeldt was examined by Professor Oken on the blowdng of the whale. 

 Several memoirs, by Professor Eichwald, of Wilna, and Dr Sachs, of Berlin, 

 were given in to the Secretary ; and printed papers by Professor Jarocki and 

 Dr Neuber, of Apenrade, were distributed among the members. Professor 

 Leuckart, of Heidelberg, exhibited, in illustration of a peculiar metamor- 

 phosis, the outer gills of a foetus of the Squalus acanthias, brought from 

 Heligoland. He spoke also concerning the anatomy of a new species 

 of Holothuria, and on the species of the Madrepore genus Fungia. 

 Professor Fischer spoke concerning the fossil elephant. Professor Schultze 

 exhibited the sympathetic nerve of the snake. Dr Von Nordman made 

 known his observations on worms in the eyes of fish ; to which Pro- 

 fessor Gurlt of Berlin added his observations on worms found in the eyes 

 of horses. 



