200 Intelligence and Miscellanies. 



On examining the horizontal needle, I found it constantly in a 

 tremulous motion, though it did not oscillate more than 2 or 

 perhaps somewhat less. The dipping needle was very quiet at 

 70"^. On setting it to oscillating, however, a second time, it 

 came to rest at 71°; the same was repeated with the same re- 

 sult, viz. IV ; whereas its ordinary dip is 72°. 



The luminous appearances of the 29th and 31st, were less 

 brilliant; and though I exammed the needles to see if any effect 

 was produced, nothing remarkable appeared during the Aurorae, 

 except that the needles were seemingly a little longer than ordi- 

 nary in coming to rest. Kew York, April 'list, 1828. 



8. Carpenter^s Chemical Warehouse. — We are pleased to an- 

 nounce, that Mr. Geo. W. Carpenter, who is advantageously 

 known to our readers, b)' his papers on pharmaceutical subjects, 

 has opened a i>rug and Chemical Warehouse, at No. 301, Mar- 

 ket street, Philadelphia. He has connected with his establish- 

 ment, a laboratory for the manufacture of some of the most im- 

 portant articles, such as quinine, piperine, denarcotized opium, 

 denarcotized laudanum, and acidulous tincture and extract of de- 

 narcotized opium, &c. &c. ; and as these articles are manufactur- 

 ed by himself, or under his immediate superintendence, their 

 quality may be depended upon. — Editor. 



9. Writ for the Medical Convention of 1830. — Inserted by re- 

 quest of Dr. Mitchill. — Whereas the Convention that was held at 

 the city of Washington, in the month of January, 1820, for form- 

 ing a Pharmacopoeia for our United btates of America, did resolve 

 that the President of that Convention should, on the 1st day of 

 January, 1828, issue writs of election to the several incorporated- 

 State Medical Societies, in the northern, middle, southern and 

 western districts of the nation, requiring them to ballot for three 

 delegates to a General Convention, to be held at Washington, on 

 the 1st day of January, 1830, for the purpose of revising the 

 American Pharmacopoeia; and whereas the several Institutions, 

 as aforesaid, are, by the same authority, requested to forward to 

 the President, on or before the first day of April, 1829, the 

 names of the three persons so chosen ; with sundry other provis- 

 ions contained in the historical introduction to the work, to which 

 the reader is referred. 



Now therefore, I, Samuel L. Mitchill, by virtue of the power vested in 

 me, by the Convention of 1820, do hereby give notice, to all the incorporated 

 Medical Societies, Colleges of Physicians and Surgeons, Medical Schools, and 

 Faculties of Universities and Colleges, and ail other authorized Bodies, that 

 they choose proper persons to represent them in the General Convention to be 

 held in January, 1830, for revising the Pharmacopoetai 



Given under my Hand, this first day of January, 1828, at the City of Neu- 

 York. Samuel L. MiTCHiti., President, 



