HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W. 289 



5670 AGNESI (Maria Gaetana, Univ. Bologna] ANALYTICAL INSTITUTIONS, trans, by JOHN 

 COLSON, pr., F.R.S., now first printed, from the Translator's MS., under the Inspection of JOHN 

 HELLINS, pr., F.R.S., with numerous diagrams, 2 vols. 4to. boards, uncut, 8s 1801 



5671 ANOTHER COPY, 2 vols. in 1, calf gilt, 10s Qd 



Although containing no important discoveries, the work long formed a valued text-book, and is remarkable as the first 

 work on the subject written by a woman. 



5672 AGUCCHIA (Lattanzio, aritmetico Bolognese] II COMPUTISTA PAGATO, per trouare in vn 

 subito il conto fatto di qualunque sorte di pagaraento che si faccia, cosi a giorni, come a mesi, et 

 anno, prima edizione; with engraved title, 4to. sewn (wanting pp. 161-8, and with some small 

 worm-holes] ; VERY RARE, 15s Roma, G. Mascardi, 1613 



5673 EDIZIONE NovisslMA, diligentemente corretta, 4to. sound copy in contemporary vellum, 



6s Venezia, 1765 



1 A very scarce Ready-Reckoner and Tables of Interest, unknown to Prof, de Morgan.' Libri Catalogue. 



5674 AHBENS (Felix B., Breslau) Das GARUNGSPROBLEM ; roy. 8vo. sewn, \s Qd Stuttgart, 1902 



5675 AIRY (Sir George Biddell, P.R.S., Astronomer Royal) ACCOUNT of the NORTHUMBERLAND 

 EQUATOIIEAL and DOME, attached to the CAMBRIDGE OBSERVATORY, with 19 plates by Basire, 

 besides woodcuts, 4to. (pp. 39), cl. (out of print), Is Qt Univ. Press, Cambridge, 1845 



5676 - ACCOUNT of PENDULUM EXPERIMENTS in the HARTON COLLIERY to DETERMINE the 

 MEAN DENSITY of the EARTH, vignette and 2 plates by Basire, 4to. (pp. 59), sewn, with author's 

 inscr. (name cut off title], 5s 1856 



The successful completion, after twenty-six years' waiting, of the experiments originally begun in the Harriet Shaft of 

 the Dolcoath Mine in Cornwall. The present experiments were made at a depth of 1,260 feet, and gave 6'56 for the mean 

 density of the earth. 



5677 [ ] ADDRESS of the ASTRONOMER ROYAL to the BOARD of VISITORS of the ROYAL OB- 

 SERVATORY, GREENWICH, Oct. 18, 1855, and REPORT to the same, June 7, '56, roy. 4to. (pp. 20), 

 sewn, 2s [1856J 



5678 - ANOTHER COPY, with author's inscr. to the Duca di Rignano, 2s Qd 



5679 - On the ALGEBRAICAL and NUMERICAL THEORY of ERRORS of OBSERVATIONS, and the 

 Combination of Observations, post 8vo. cl. (scarce), Is Qd Cambridge, 1861 



5680 On the CORRECTIONS in the ELEMENTS of DELAMBRE'S SOLAR TABLES required by the 



Observations at Greenwich Observatory, 4to. (pp. 12), sewn, Is Qd 1827 



5681 - ELEMENTARY TREATISE on PARTIAL DIFFERENTIAL EQUATIONS, with 4 plates, and 

 duplicate set loose and mounted on cards, cr. 8vo. cl., 2s Qd 1865 

 On ENCKE'S COMET v. ENCKE, post. 



5632 [ ] The FIGURE of the EARTH (Encyclopaedia Metropolitana), with 3 plates by Lowry, 4to. 



unbound, 3s '[1830J 



5683 GRAVITATION : an elementary Explanation of the Principal Perturbations of the Solar 



System, post 8vo. cl., 3s 1834 



5684 - INSTRUCTIONS and CHART for OBSERVATIONS of MARS in Right Ascension at the 

 Opposition of 1860, for obtaining the Measure of the Sun's Distance, with folding plate, 8vo. (pp. 9), 

 sewn, 2s 185S 



5(335 MATHEMATICAL TRACTS, on Physical Astronomy, the Figure of the Earth, Precession and 



Nutation, and the Calculus of Variations, with plates, Svo. boards, 2s Qd Cambridge, 1826 



5636 SECOND EDITION, with plates, Svo. hf. cl., or hf. calf gilt, 4,9 Qd ib., 1831 



This edition first contains the valuable tract on the Und'ulatory Theory of Light. 



5637 THIRD EDITION, corrected and improved, with plates, 8vo., hf. cl., 5s ib., 1842 



5688 ANOTHER COPY, calf gilt, Qs 



689 FOURTH [LAST] EDITION, with plates, Svo. cl. (out of print], 8s Qd ib., 1858 



5690 On a NEW ANALYZER, and its Use in Experiments of POLARIZATION, 4to. (pp. 10), sewn, 



with author's inscr. to Dr. P. M. Roget, F.R.S. (scarce], 5s Qd ib., 1832 



5691 - NUMERICAL LUNAR THEORY, with folding tables, roy. 4to. cl., 7s Qd (p. 15s nett) 1886 



'An examination of Lunar Theory, as tested by the substitution of numbers for symbols, or for the results of long 

 and complicated operations conducted exclusively by use of symbols.' Preface. 



5692 POPULAR ASTRONOMY [LAST REVISED ED.] , plates and woodcuts, 16mo. cl. , 2s 1868 



5693 On a REMARKABLE MODIFICATION of NEWTON'S RINGS, 4to. sewn, with author's inscr. to 



Dr. P. M. Roget, F.R.S. (scarce), 5s Qd Cambridge, 1832 



5694 [ ] REPORT of the ASTRONOMER ROYAL to the BOARD of VISITORS, 1855, '57-9, '65, '70, 



'78-9, and '819 vols. 4to. sewn, 5s 1855-81 



5695 REPORT on the TELESCOPIC OBSERVATIONS of the TRANSIT of VENUS, 1874, with Q plates, 



folio (pp. 33), sewn, 3s Qd 1877 



Containing the ' Determination of the Mean Solar Parallax from the Observations.' 



5696 Six LECTURES on ASTRONOMY, to the Friends of the Ipswich Museum, 2nd Ed., with 



1 folding plates, Svo. cl., 3s Qd [c. 1850] 



5697 FOURTH EDITION [with new Preface], with 1 folding plates, Svo. cl., 3s [c. 1855J 



5698 On SOUND and ATMOSPHERIC VIBRATIONS, with the Mathematical Elements of Music, 2nd 



[last] Ed., 2 plates, post Svo. cl., uncut (out of print), Q* 1871 



5699 [ ] TRIGONOMETRY; [Lardner (Dionysius, pr., F.R.S.)] GEOMETRICAL ANALYSIS; 



[Barlow (Peter, F.R.S.)] THEORY of NUMBERS with 3 plates (Encyclopaedia Metropolitana), 4to. 

 (pp. 11], sewn, 3s Gd [1827] 



5700 On the UNDULATORY THEORY of OPTICS, new Edition, with 2 folding plates, post Svo. 



cl. (out of print), with auto, of Prof. H. W. LI. Tanner, F.R.S., 5s 1866 



5701 AIRY (Osmund; LL.D.) GEOMETRICAL OPTICS, illustrated, large 12mo. cl. (out of print), 



3s Qd 1870 



