15S [March, 1S42. 



STATED MEETING, March 15, 1S42. 

 Dr. McMurtrie in the Chair. 



DONATIONS TO MUSEUM. 



Vertebra of a shark from New Egypt, N. Jersey, and a speci- 

 men of Exogyra costata, from Woodward's farm, N. Jer- 

 sey. Presented by Dr. Chaloner. 



DONATIONS TO LIBRARY. 



Fourth Report of the Geological survey of New Brunswick, 

 by Abraham Gesner, M. D. From the Author. 



Boston Journal of Natural History. Vol. 4th, No. 1. From 

 the Society. 



Three pamphlets by Dr. Morton, viz : " Description of some 

 new species of Organic Remains of the Cretaceous group 

 of the United States;" " Remarks on the so-called Pigmy 

 race of the Valley of the Mississippi ;" and *' Remarks on 

 the ancient Peruvian race." Presented by the Author. 



Written Communications. Dr. Morton read a letter from 

 Mrs. Lucy W. Say, dated March 14th, 1842, acknowledging 

 the receipt of her notice of election as a life member of the 

 Academy. 



Vereal Communications. Dr. Goddard stated that he 

 had successfully repeated an improvement in M. Daguerre's 

 process, by which an instantaneous impression of the object 

 may be taken ; consisting in applying a spark of electricity to 

 the back of the plate. The positive spark appeared to be more 

 effectual than the negative. 



