3 



CONTENTS. 



Abt. I. Biographical Memoir of M. de Lamarck. By the 



Baron Cuvier, ----- Page 1 



II. On the Hindu Astronomical Tables. Communicated 



by the Author, 22 



III. On a Species of Beroe found on the north-east coast 



of Irelan<}. \By Robert Patterson, Esq. Trea- 

 surer to the Belfast Museum. Communicated by 

 the Author, - 26 



IV. Reply to Dr John Davy's Remarks on Certain State- 



ments by Mr Faraday, contained in his " Re- 

 searches on Electricity," in the Edinburgh Philo- 

 sophical Journal for October 1835. By Michael 

 Faraday, D. C. L., F. R. S., &c. &c. - - 37 



V. An Account of Professor Ehrenberg's more recent 



Researches on the Infusoria, - - - 42 



Section I. On the existence of a Pharynx and of teeth 



in the Polygastric Infusoria, - _ jb. 



II. Concerning a System of Internal Organs, 

 simple, double, or multiple, very irritable, 

 which may be discovered in the Polygastri- 

 ca, and which, perhaps, are the Male 

 Sexual Organs, 4. . - . 45 



III. Concerning a violet or very deep blue co- 



loured liquid, which is found in the Intes- 

 tines of the Polygastrica, and concerning 

 the particular organs which secrete it, 51 



IV. Upon Internal Organs like Branchiae, which 



have been discovered in the Rotatoria, 54 



V. On the Nervous System of the Infusoria, 60 



