1849.) 



147 



eighth inches in length, and purporting to be about nine weeks old, which, 

 however, I think too young, the maxillo-intermaxillary articulation is still 

 evident at the ascending process, but it does not divide the latter so equally, 

 being more internal and inferior, apparently from a more rapid development of 

 the nasal processof the true maxillary bone. Just above the alveolar ridge they 

 are already auchylosed together. 



In another embryo, in the same museum, measuring three and one-fourth 

 inches in length, the two bones have become firmly united, excepting behind the 

 incisor alveoli, but the line of original separation is readily traced out, from a 

 greater degree of thinness and transparency along its course. The nasal process 

 of the true maxillary bone has so much increased beyond the nasal process of the 

 intermaxillary bone, that the latter no more ascends to the summit of the former, 

 but is considerably inferior and internal. 



In the fcctal skeleton, measuring five inches in length, all traces of the inter- 

 articulation have disappeared, except behind the incisor alveoli, which latter 

 portion, as is well kuQwn, does not usually disappear until some time after birth, 

 and in some instances is found in the adult cranium. 



January 23c^, 1S49. 



Mr. Phillips in the Chaifv 



A letter was read from the Baroness Berzelius, dated Stockholm, 

 September 15, 1848, announcing to ttie Academy the decease of her 

 late husband, the Baron Berzelius, a Correspondent of this Institu- 

 tion. 



January 30M, 1849. 

 Dr. Bridges in the Chair. 



The Auditors reported that they had examined the account of the 

 Treasurer for 1848, and had found it correct. 



The Monthly Report of the Corresponding Secretary was read and 

 adopted. 



The resolution offered by Dr. Leidy, at the last meeting for business, 

 was then taken up, that the following Article of the By-Laws be 

 amended : 



'■'■Chap. 6th, Art. 1. There shall be seven standing committees, 

 viz. — the Auditors, to consist of three members; the Mineralogical 

 and Geological Committee, and the Zoological Committee, to consist 

 of seven members each; the Publication, Library and Botanical Com- 

 mittees, and the Committee on Physics, to consist every one of five 

 members, whose term of service shall be one year. And all these, 

 except the Auditors and Publication Committee, shall be elected at 

 the last meeting of January in each year." 



So as to read thus : 



"There shall he fifteen Standing Committees, viz.: 1. The Ethno- 

 logical Committee ; 2, the Committee on Comparative Anatomy and 



