4 INDEX. 



Clupea, tyrannus, description of, V, 7%. 



Cock, account of one with two perforations, contrived to obviate the neces- 

 sities of a vent-peg in tapping air-tight casks, VI, 105. 



Cold, excessive, observed at Hallowell, in the district of Maine, in January. 

 1807, VI, 401. 



Colour, of solution of copper in volatile alkali, V, 6. 



of the blood, opinions of physiologists and chemists concerning the ver- 

 milion, VI, 248, — 250. — opinion of Dr. Conover, 251. 



Colours, on the different, of the metallic oxides, 253. 



Comet, observations on that which appeared in Septr. 1807, by J. J. Ferrer, 

 VI, 345. — on the same, by W. Dunbar, 368. 



Commissioners, for determining the boundaries between the U. S. and the 

 Floridas, V, 203. — Spanish commissioners returned, 216. 



Committee, appointed by the A. P. S. for collecting information respecting 

 the state of this country, V, ix. — circular letter of the committee, ix. 



Committees, of the A. P. S. rules adopted for the choice of papers for pub- 

 lication, VI, iv. 



Conover, Samitel F.—M. D. his essay on the vermilion colour of the blood, 

 and on the different colours of metallic oxides, with an application of 

 these principles to the arts, VI, 247. 



Contents, of, V, xxi. — VI, xxi, xlv. 



Contortce, destructive to insects, VI, 81. 



Copper, action of the vapour of spirit of nitre on, V, 3.— of marine acid, 3. 

 — colouring of its solution in volatile alkali, 6. 



Cotton, animal, description of the insect producing it, V, 150. 



wild. See Asclepias syriaca. 



C.oulter, Thomas, Esq. his description of a method of cultivating peach-trees 

 with a view to prevent their premature decay, V, 327. 



Country, state of. See Committee. 



D 



Darwin's theory' of spontaneous generation refuted, VI, 119,-129. 



Datura stramonium, poisonous properties of, V, 57. 



Deaths, statement of, with the diseases and ages in the city and liberties of 

 Philadelphia from Jan. 1807 to Jan. 1809, VI, 403. 



Dephlogisticated and inflammable air not exploding in red heat, V, 42. 



DelVitt, Simeon, Esq. of Albany, N. T. his observations on the eclipse^of 

 - June 16th, 1806, VI, 300. 



Diameter of the sun, VI, 216. 



Digester. See Papin. 



Dipus Americanus, supplement to the -account of, VI, 143. 



Doctrine of phlogiston, V, 28. 



Dunbar, William, Esq. of Mississippi territory, one of the commissioners for 

 determining the boundary line between the U. S. and the Floridas, V, 

 203. — his report on the point of departure, 215, 216. — declined acting 

 further, 217. 



his paper on the language of signs among certain North American In- 

 dians, VI, !••— meteorological observations made near the Missis- 



