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52 AIBY (Sir George Biddell, F.R.S., Astronomer Eoyal) MATHEMATICAL TRACTS, THIRD 

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f>3 FOURTH [LAST] EDITION, enlarged, 8vo. cl., 12s ibid., 1858 



54 On SOUND and ATMOSPHERIC VIBRATIONS, with the Mathematical Elements of Music, 



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55 POPULAR ASTRONOMY [LAST REVISED ED.], plates and woodcuts, 16mo. cl., 2s 1866 or '8 



56 ELEVENTH EDITION, plate and woodcuts, post 8vo. cl., Is Qd 1883 



57 REDUCTION of the OBSERVATIONS of the MOON, made at the Royal Observatory, Green- 

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58 - REDUCTION of the OBSERVATIONS of PLANETS, made at Greenwich Observatory, 1750-1830, 



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59 SEVEN- YEAR STAR CATALOGUE of 2022 Stars, 1854-60, from Observations at Greenwich 



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60 Six LECTURES on ASTRONOMY, 2nd Ed., 7 plates, 8vo. cl., 5s [c. 1850] 



Cl - TREATISE on MAGNETISM, ivoodcuts, post 8vo. cl. (out of print], Is 6d 1870 



Largely mathematical. The author was the inventor of a new system of compensation as applied to the mariner's 

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62 On the UNDULATORY THEORY of OPTICS, new Ed., with 2 folding plates, post Svo. cl. (out of 



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63 ALBEBTI (Leonbatista) ARCHITETTURA, tradotta in Lingua Fiorentina da COSIMO BARTOLI ; 



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This edition is not mentioned by Brunet, but agrees wholly with the collation of the first Italian edition of 1550 given 

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v ' Le plus estime" de ses ouvrages .... II passe avec raison comme le restaurateur de I'arehitecture en Italic, tant par 

 ses travaux d'artiste que par ses ecrits theoriques. II acheva le Palais Pitti a Florence ; il construisit la Palais Ruccellai', 

 etc. etc. Biogr. Gen. 



64 ALDINI (Giovanni) ACCOUNT of the late IMPROVEMENTS in GALVANISM, with a series of 



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The author was a nephew of GALVANI, and contributed largely towards popularising the latter's discoveries. He also 

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 with the galvanic current. 



65 ALDIS (William Steadman) ELEMENTARY TREATISE on SOLID GEOMETRY, 2nd Ed., revised, 



Svo. cl., 2s Cambridge, 1873 



66 FOURTH EDITION, enlarged, post Svo. cl., 3s. (p. 6s) ib., 1886 



67 ALEMBEBT (Jean le Bond d'; Encijclopediste) OPUSCULES MATHEMATIQUES, ou Memoires sur 



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THE ONLY COLLECTED EDITION of 58 of the author's most important memoirs on mathematical, astronomical, and 

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68 ESSAI d'urie NOUVELLE THEORIE de la RESISTANCE des FLUIDES ; with 2 plates, 4to. con- 

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69 RECHERCHES sur differens Points importans du SYSTEMS du MONDE ; with plates, 3 vols. 4to. 



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 d'une axe avec une vitesse donnee, il n'y a pas un spheroide applati qui est compatible avec 1'equilibre, mais qu'il en ait 

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70 RECHERCHES sur la PRECESSION des EQUINOXES, et sur la Nutation de 1'Axe de la Terre, 



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The first work proving and ascertaining correctly the nutation of the earth's axis. 



71 REFLEXIONS sur la CAUSE GENERALS des VENTS; with 2 vignettes after EISEN, and2 plates^ 



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 of motion and the reasonings depending on them to be represented in the most general form, in analytical language . Prof. 

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