Proceedings of the JV. Y. Lyceum. 173 



24th. — The Anniversary Oration was pronounced by the 

 Rev. Mr. Schaeflfer. 



A note was read announcing the receipt of zoological 

 specimens brought by Mr. A. Vache from the S. Atlantic 

 and Pacific ocean. 



3 1st. — Mr. Barnes delivered an Introductory Lecture 

 on the study of natural history. 



April 7th. — Dr. Dekay reported on the scutella quinque- 

 fora, and on the ophiura tetragona. 



Mr. Barnes presented a specimen of an extinct animal, 

 (so supposed,) and described by Say as the pentramite, 

 commonly called althea bud. 



Dr. Dekay delivered a Lecture for the evening, being a 

 Dissertation on the Literary History and Anatomy of 

 Fishes. 



14th. — A paper was read from Dr. E. James on the Pum- 

 ice, as it is called, of the Missouri, accompanied with spe- 

 cimens. Bradbury and others supposed it to be produced 

 by the combustion of coal beds. Dr. James calls it amyg- 

 daloid ; vast deposits of which are found along the base of 

 the rocky mountains. It is infusible, a character in which 

 it differs from the pumice of volcanic or pseudo-volcanic 

 origin. It strongly resembles in external appearance the 

 amygdaloid from Patterson, N. J. 



Dr. Akerly delivered a Lecture on Polyps or Zoophiles^ 

 illustrated by splendid transparent figures. 



21st. — Dr. Mitchill read a Lecture on Parasitical Ani- 

 mals which he divides into molluscous, arachnidal, crusta- 

 eeous, insects, and zoophites. 



28th. — Dr. Mc Nevin read a Lecture on Electrick Mag- 

 netism. 



May 5th. — A suite of minerals was received from Mex- 

 ico, illustrating the geology of Mont Catherine de Creyas. 



Mr. Cozzens presented some interesting shells from Wap- 

 penger's Creek. 



Dr. Mitchill read an analysis of a work lately published 

 in Paris, on Fossil Trilobites by M. Brongniart, and Fossil 

 Crustacea by M. Demarest. It is a matter of regret that 

 so few of the N. American Trilobites are known to the dis- 

 tinguished author. 



12th. — Dr Van Rensselaer read a Lecture on the Salt 

 Formations of America. 



