412 ANNUAL OF SCIENTIFIC DISCOVERY. 



Muscles and pearls, agreement of, in crystalline structure. Arch, fiir Nat., 2. 

 Nautilus, animal of. Gray. Mag. Nat. Hist.. Oct. 

 Navicula as an animal parasite. Proc. Nat. Hist., July. 

 Negro races of Eastern Africa. C. R., June 3. 

 Oculinitles, monograph of. Ann. Sci. Nat., Jan. and Feb. 

 Opossum, generation and development of. Michel. Am. Ass. 

 Ornithological species, new. Bonaparte. C. R., March 11. 

 Ornythorhynchus and tachyglossus, anatomy of. Arch, flir Nat., 1. 

 Orar.g oulang, brain of. Arch, fur Nat., 3, 4. 



Osteography of the five classes of Vertebrata. Flourens. Jour, des Sav., June, July, 

 and Aug. 



PboladidsB. Clark.. Mag. Nat. Hist., Nov. 



Plaimria of Massachusetts. Girard. Proc. Nat. Hist., March. 



Polypi, halcyonoid. Agassiz. Am. Ass., 207. 



researches on. Ann. Sci. Nat., Aug., Sept., and Oct., 1849. 

 Polypterus, new species of. Ayres. Jour. Nat. Hist., Vol. VI. No. 2. 

 Relation between animals and the elements in which they live. Agassiz. Sill., May. 

 Reptiles, Saurian, new. Mag. Nat. Hist., Nov. 

 Respiration, researches on. Ann. de C. et de P., Jan. 

 Salmon tribe. Jameson. July. 

 S.ta bears and otters, skeleton of. Arch, fiir Nat., 1. 

 Seal, crested, teeth of, and a new species of. Mag. Nat. Hist., July. 

 Shells of the Exploring Expedition. Gould. Proc. Nat. Hist. 



" new fresh-water and marine. Conrad. Acad. Nat. Sci., Vol. I. Part 4. 

 Spots on the retina. Gibbes. Am. Ass., 58. 

 Stag, monograph of. C. R., Dec. 24, 1849. 



Synopsis generum crustaceorum prdinis Schizopoda. Dana. Sill., Jan. 

 System of notation for the teeth in Mammalia. Owen. Mag. Nat. Hist., Aug. 

 Termatidas of Western Africa. Savage. Mag. Nat. Hist., Feb. 

 Tregonia, recent species of. Mag. Nat. Hist., July. 

 Trochilides. Bonaparte. C. R., April 1. 

 Urine, chylous. Jones. Brewster, Oct. 

 Vertebra, ideal. Melville. Mag. Nat. Hist., Jan. 

 Wart hogs, molar teeth of. Owen. Roy. Soc., 75. 



Wax in animal and vegetable substances. Ann. Sci. Nat., Oct. and Nov., 1849. 

 Worms, organization of. Blanchard. Ann. Sci. Nat., July and Aug., 1849. 

 Zoophytes, Devonian, new. Mag. Nat. Hist., Nov. 



ASTRONOMY AND METEOROLOGY. 



Alpha Centaun, and the size of the fixed stars. Smyth. Jameson, April. 

 Climate of Madeira. Edin. Med. and Surg., July. 

 Comet, Encke's. As. Jour., 7. 



" fifth, of 1847. Gould. As. Jour., 10, 11. 



" method of finding distance of, from the earth. Bond. As. Jour., 15. 



" of 1843, orbit of. As. Jour., 4, 8, 20. 



" of 1844-45. Bond. As. Jour., 13. 



" observations in 1845-46. Bond. As. Jour., 17, 18. 

 Cometary physics. Srnyth. Ath., Aug. 24. 



Deviations from the mean state of the atmosphere, importance of, for meteorology. 

 Ballot. Brewster, July. 



Development of the perturbative function of planetary motion. Peirce. As. Jour., 4 

 5. Walker, 17. 



Fire-ball. Liais. C. R., Feb. 25. 

 Greenwich observatory. Edin. Rev., April. 



planetary reductions, error in. Schubert. As. Jour., 8, 9. 

 Hudson observatory, longitude of. Loomis. As. Jour., 8, 9. 

 India, meteorological observations in. Sykes. Roy. Soc., 75. 

 Meteor of Dec. f9, 1 849. Forbes. Erew.-;ter, Nov. 

 Meteorology ofEngland. Glaisher. Brewster. 

 Meteorological instruments. Drew. Civ. Eng. and Arch , July. 

 Moon, influence of, on the earth's atmosphere Arago. Naut. Mag., July and Sept. 

 Observations at Cape of Good Hope. Airy. Jameson, July. 

 Occultation of Jupiter and its satellites. Am. Phil. Soc. 

 Occultations, machines for calculating. Hill. As. Jour., 9. 

 Planets, researches on. Leverrier. C. R., April 22. 

 Prime meridian, American. Loverine. Sill., March. 

 Washington, P. C., latitude and longitude of. Cur'ev, As. Jcur.. 9 



