214 



[December, 



analysis of the stalk by Weber's new analytical Tables ; want of data in the 

 seed analysis rendered its recalculation impossible. I have also recalculated 

 Summer's analysis to the hundred parts, neglecting Sand, Coal and Silica ; and 

 having separated the salts in Shepard's analysis, I recalculated the constituents 

 in the same manner. The following table will show the comparative nature of 

 the constituents of the ash of the plant, seed and wool, as analysed by Shepard, 

 Summer and Judd ; the defective analyses above mentioned considered as 

 approximative : 



The Report of the Corresponding Secretary was read and adopted. 

 The Recording Secretary then read the following 



ANNUAL REPORT. 



From the 1st of January to the 1st of December, 1852, there have been elected 

 thirty-three Members and eight Correspondents ; four Members have died. 



Besides numerous interesting minor and verbal communications, the following 

 have been presented, during the past year, and reported on for publication in the 

 Journal and Proceedings of the Academy. 



By Audubon and Bachman. Description of a new North American Fox. 



By Spencer F. Baird and Charles Girard, four, to wit : Characteristics of some 

 new Reptiles in the Museum of the Smithsonian Institution, three papers ; Descrip- 

 tions of a new species of Reptiles, collected by the United States Exploring Expe- 

 dition. 



By John L. Burtt, M. D. On the Influence of Sulphuretted Hydrogen, arising 

 from the bottom of the bay of Callao, on the fishes inhabiting its waters. 



By Mr. John Ca^sin, two, to wit : Catalogue of the Halcyonidae in the Collection 

 of the Academy of Natural Sciences of Philadelphia ; Descriptions of new species 

 of Birds, specimens of which are in the Collection of the Academy of Natural 

 Sciences of Philadelphia, 



By Mr. T. Conrad, three, to wit : Description of the new Fossil shells of the 

 United States, (published in the Journal.) Remarks on the Tertiary Strata of 

 St. Domingo, and of Vicksburg, Miss.; Notes on shells with Descriptions of new 

 species. 



By Mr. James D. Dana, three, to wit : Conspectus Crustaceorum quae in Orbis 

 Terrarum Circuranavigatione, Carolo Wilkes e Classe Reipublicaj Faederatae 

 duce, iexit et descripsit J. D. Dana, three papers. 



