74 



Specimen of Printing Types, &c. cast by Johnson & Smith. Phila- 

 delphia, 1841. 8vo. — From the Publishers. 



Charts. 1. A Chart of Pensacola Harbour and Bar, Florida, by 

 Lieut. Col. James Kearney, TJ. S. Top. Engineers, from a Survey 

 in 1822. 4 Sheets. 2. A Chart of Core Sound, North Caroli- 

 na, in 1837, by the same. 3. Four Charts, portions of the pre- 

 ceding Chart, on an enlarged scale. 4. A Chart of part of San- 

 dusky Bay, &c. in 1826, by Lieut. Campbell Graham, U. S. A. 

 copied on a reduced scale. 1838. — From Major James D. 

 Graham. 



FOR THE CABINET. 



Dried Specimens of Western and Southern Plants. — From Dr. 



Charles W. Short, of Louisville, Kentucky. 

 An Engraved Portrait of Dr. Philip Tidyman, by T. B. Welch. — 



From the Engraver. 



The Committee, consisting of Dr. Patterson, Professor 

 Bache, and Professor Vethake, to whom was referred a paper, 

 entitled " On the Expansion of F. (x + A)" by Pike Powers, 

 Esq. of the University of Virginia, reported in favour of its 

 publication in the Transactions; which was accordingly or- 

 dered. 



The paper of Mr. Powers consists of a new investigation of Tay- 

 lor's Theorem. The only postulates assumed are, first, " that there 

 are no functions, which throughout their whole range of values, 

 change incessantly from increase to decrease, as x varies, and that 

 by quantities greater than the change in a;;" and, secondly, "that 

 there are no functions, which, while they undergo a constant increase 

 or decrease through finite intervals of value, yet always receive an 

 infinite change for a finite change in x." On these data the demon- 

 stration of Mr. Powers is founded; but it is not of a nature to admit 

 of an abstract. 



A communication was received, entitled " Description of a 

 New Form of a Transportable Original Barometer, and the 

 Method of constructing and using the same, by F. R. Hass- 

 ler ;" which was read and referred to a committee. 



Mr. Lea presented a continuation of his paper on Fresh 

 Water and Land Shells; which was read and referred to a 

 committee. 



