558 HENRY SOTHEKAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 



11237 MACLEAR (Sir Thomas, F.R.S., Royal Astronomer at the Cape) CONTRIBUTIONS to 

 ASTRONOMY and GEODESY, 2ND SERIES, 4to. (-pp. 36), sewn, 3s Qd 1853 



Containing his Comparison of Southern Stars of the British Association Catalogue Part III : Observations of Petersen's 

 Comet : his Investigation of the Parallax of /3 Centanri, etc. 



11238 - - FURTHER PARTICULARS of the FALL of the COLD BOKKEVELD METEOROLITE, 4to. 

 (pp. 6), unbound, Is 6d 1840 



11239 - - OBSERVATIONS of DONATI'S COMET, at the Royal Observatory, Cape of Good Hope, 

 Oct. llth, 1S58 March 4th, 1859, 4to. (pp. 25), sewn, 3s [I860] 



' His cometary observations were of great value.' Miss Agnes M. Clerke. 



11240 VERIFICATION and EXTENSION of LA CAILLE'S ARC of MERIDIAN at the CAPE of GOOD 



HOPE [edited by SIR GEORGE B. AIRY, F.R.S.], with 23 plates (mostly folding] of astronomical 

 instruments, etc., 2 vols. 4to. and roy. 4to. cl., 1. 10s 1866 



' For this great work, still fundamental in the survey of the colony, Maclear received the Lalande prize in 1867 and a 

 royal medal in 1869. ' Miss A . M. Clerke. 



' He has earned for himself a high place among living astronomers by the ability with which he has executed this 

 important geodetic operation. . . . His labours have removed a serious difficulty from the science of astronomy, since we 

 are now assured that the a-tual meisurement of meridional arcs on each side of the equator concurs with the theory 

 of gravitation, and the experiments with the pendulum, in assigning the same ellipticity to both hemispheres. 'Prof. 

 R. < ; runt, F.US. 



11241 McLEOD (Herbert; Cooper's Hill ; F.R.S. ; Director Roy. Society's Cat. Scientific Papers) On 

 the ELECTROLYSIS of AQUEOUS SOLUTIONS of SULPHURIC ACID, with special Reference to the 

 Forms of Oxygen obtained, 2 folding diagrams, 8vo. (pp. 16), sewn, with author's inscr., 2s 1886 



11242 MACNEILL (Sir John Benjamin; F R.S. ; M.R.I.A. ; pupil of Telford) TABLES for CAL- 

 CULATING the CUBIC QUANTITY of EARTH WORK in the CUTTINGS and EMBANKMENTS of Canals, 

 RAILWAYS, and Turnpike Roads, with 4 plates, 8vo. green vellum, 4s 1833 



11243 SECOND [AND LAST] EDITION, considerably enlarged, with 4 folding plates, 8vo. hf. 



morocco gilt, 5s Dublin, 1846 



11244 - - ANOTHER COPY, printed on yellow paper, 8vo. hf. morocco gilt (nice copy), 6s 



' This useful work.' D. N. B. 



Sir John Macneill was the first Professor of Civil Engineering at Trinity College, Dublin. He had besides a large 

 private practice, and c;irriei out the Dablin and Drogheda Riilway, arid the Kildare section of the Great Southern 

 and Western. 



11245 MACPHERSON (Hector, Jun.; F.R.A.s.) A CENTURY'S PROGRESS in ASTRONOMY, 8vo. cL* 

 3s 6d (p. 6s nett) Edin., 1906 



A popular history of astron my from Sir William Herschel to 1906. 



11246 McPHERSON (John Ambrose, M.I.C.E.) WATERWORKS DISTRIBUTION : a Practical Guide 

 to the Laying Out of Systems of Distributing Mains, with 20 plates (many folding], and 103 wood- 

 cuts, cr. 8vo. cl., 3* 6d (p. 6* nett) 1900- 



11247 McPHERSON (William, Ohio State Univ.), and William Edwards HENDERSON: 

 ELEMENTARY STUDY of CHEMISTRY; revised Edition, with 90 illustrations, cr. 8vo. cl., 3s 

 (p. 6s) Boston [Mass., 1906] 



11248 [MACQUER (Pierre Joseph, de I' Academic des Sciences)] DICTIONARY of CHEMISTRY, con- 

 taining the Theory and Practice, with full Explanations of the Qualities and Modes of Acting of 

 CHEMICAL REMEDIES, and the Fundamental Principles of the Arts, Trades, and Manufactures- 

 dependent on Chemistry, translated, with Notes and Additions, by the Translator [JAMES KEIR, 

 F.R.S ], 3 copperplates of chemical apparatus and characters, and 2 folding tables of affinities, etc.> 

 2 vol*. 4 to. in ] , old calf (joints cracked), 12s 6d 1771 



11249 - - SECOND EDITION ; with APPENDIX : a Treatise on the various Kinds of Permanently 

 Elastic Fluids, or Gases, with 3 copperplates (2 folding] of chemical apparatus and symbols, and 

 folding table, 3 vols. 8vo. old calf (a few joints cracked) ; RARE, 17s 6d 1777 



This edition is valuable for the appendix by the translator, wherein he sets forth the discoveries made by Joseph Black,, 

 Cavendish, and Lavoiier. It also contains a passage interesting in connexion with molecular physics: 'For, in what 

 does heat consist, but in the exceedingly quick vibrations of the particles of burning bodies?' In his preface to the 

 appendix the translator apologizes for using here first the word j/as against the terms ' fixable, fixed, or factitious air' 

 hitherto employed. 



11250 ELEMENS de CHIMIE PRATIQUE, contenant la Description des Operations f on damen tales- 



de la Chymie, avec des Explications et des Remarques sur chaque Operation, 2 e Edition, corrigee ; 



ivith vignette on titles, 2 vols. 12mo. contemporary calf gilt, 8s tid 1756- 



11251 - ELEMENS de, CHYMIE THEORIQUE, premiere edition, I2mo. old calf gilt, 5s 1751 



11252 NOUVELLE EDITION; with 4 folding plates of chemical apparatus and symbols, 12mo. 



contemporary mottled calf gilt, 8s 6d 1753- 



11253 - - ELEMENTS of the THEORY and PRACTICE of CHYMISTRY, translated [by ANDREW REID], 

 2nd Edition, with 6 copperplates of chemical apparatus and symbols, 2 vols. 8vo*. old calf, with 

 Calgarth Park booklabel and auto, of RICHARD WATSON, F.R.S. (1737-1816), absentee Bp. of 

 Llandaff, 14s 1761 



11254 - THIRD EDITION, with 6 copperplates, 2 vols. 8vo. old calf (joints cracked and name cut 

 off titles), Ss 1775- 



1)255 - ANOTHER COPY, 2 vols. contemporary calf (sound copy), 10s 



11256 THE SAME, 2 vols. fine copy in contemporary tree-calf extra, 12s 



' His work lay less in theoretical than applied chemistry, to which he made valuable contributions, especially in the 

 manufacture of pottery and in dyeing. . . . From the beginning of his career to its end Macquer was a phlogiston ist, and 

 did all that he could to reconcile the continually augmenting discrepancies between theory and facts ; he paid no heed to- 

 proportions by weight, for it was only in this way that he could maintain the phlogistic hypothesis. And even although 

 it was proved to ba erroneous and untenable several years before his death, he was still unable to renounce it.' 

 I'mf. E. v. Meyer. 



11257 MAGANZINI (Italo) LAVORI ESEGUITI nel BELGIO, pel MIGLIORAMENTO del Regime del 

 FlUME MOSA; with 4 folding plates, roy. 8vo. hf. calf, 4s Roma, 1877 



