196 



September 4, 1844. 



Dr. Storer, Vice President, in the Chair. 



Dr. Wyman mentioned, that, on a late visit to the Ma- 

 galloway River, he had noticed, in the river bed, mounds 

 of pebbles, two or three feet in diameter, which he was told 

 were heaped up by a fish called the Chub, at its breeding 

 season, and that its eggs were deposited among the stones. 

 He referred to the statement of a similar fact with regard 

 to the Lamprey Eel, in Dr. Storer's report, and remarked 

 that he was not aware of any other instance of the kind. 



Dr. W. also mentioned that Dr. H. J. Bigelow had observed, in 

 the same river, specimens of fresh water sponge, (Spongia fluvi- 

 atilis.) The masses were generally of a flat form, half an inch 

 thick and six or eight inches in diameter. Spiculse were found in 

 it as in marine sponge. Lamarck maintained that fresh water 

 sponges were devoid of spicula, but later observations have dis- 

 proved this. 



ADDITIONS TO THE CABINET. 



Two living specimens of Agama, from Texas ; and a phial con- 

 taining eggs, 18 of which were deposited by one individual. Also 

 Gophers, from Florida. From Capt. Gerry, U. S. N. 



Specimens of Vegetable Ivory. From Mr. John A. Lerow. 



Cranium of a Woodchuck, with a remarkable distortion and pro- 

 longation of the incisors. From Mr. Wright, through Mr. Ogden. 



A beautiful Trilobite, embedded in a fragment of limestone, 

 picked up on Long Island, in Boston Harbor. By Mr. Ogden, in 

 behalf of a friend. 



Thanks were voted to the donors. 



ADDITIONS TO THE LIBRARY. 



Gray's Genera of Birds, No. 4. Subscribers. (See page 137.) 

 Proceedings of Amer. Philos. Soc, No. 30, for April. June, 



1844. A. P. Soc. 

 Almanach der Koniglichen bayerischen Akademie der Wissen- 



schaften. 12mo. Munchen, 1843. Akademie. 



