HENKY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 55 



11259 MACVICAR (John Gibson, LL.D., D.D., Minister of Mo/at] The FIRST LINES of 

 MORPHOLOGY and ORGANIC DEVELOPMENT, GEOMETRICALLY CONSIDERED, 8vo. (pp. 15), sewn, 

 2s \_Edin., 1861J 



11260 - On the FORMS and STRUCTURE of the ATOMS and MOLECULES of BODIES, with diagrams, 

 8vo. (pp. 15), sewn, 3s Qd [ibidem, c. 1875] 



An ingenious paper (but devoid of all experimental proof), on molecular structure. 



11261 INQUIRIES concerning the MEDIUM of LIGHT and the FORM of its MOLECULES, with 



folding front., 8vo. boards, with author's inscr. to P. M. Roget, M.D., F.R.S., and the latter' s auto, 

 (scarce), IQs 6d ib., 183* 



In order to explain the optical phenomena which were difficult or impossible to account for on the corpuscular theory, 

 the author assumes light to consist of molecules with a crystalline structure emitted from the luminous body and to- 

 travel in groups. 



11262 The NORMAL PRODUCTS of HEPATIC ACTION, Part II, 8vo. (pp. 15J, sewn, 2s [ib., 1871J. 



11263 On the STRUCTURAL RELATION between UREA and URIC ACID, 8vo. (pp. 8), sewn, 2s 



[ib., 1870] 



11264 MADDISON (Isabel; Brt/n Mawr Coll.) On CERTAIN FACTORS of the c- and^o- DISCRIMINANTS,. 

 and their Relation to Fixed Points on the Family of Curves, with folding plate, 8vo. (pp. 15), sewn, 

 \s 1892: 



11265 On SINGULAR SOLUTIONS of DIFFERENTIAL EQUATIONS of the FIRST ORDER in Two 



VARIABLES, and the Geometrical Properties of certain Invariants and Covariants of their complete- 

 Primitives, with 2 folding plates, 8vo. (pp. 64), sewn, 2s 189$> 



11266 MADDY (Watkin, pr., St. John's Coll., Cantab.) The ELEMENTS of the THEORY of PLANE- 

 ASTRONOMY, new [last] Edition, greatly enlarged by JOHN HYMERS, D.D., F.R.S., with 4 folding" 

 plates, 8vo. boards (scarce), 6s Cambridge, 1832: 



' An excellent work.' Miss Agnes M. Clerke. 



11267 MADLER (Johann Heinrich; Univ. Dorpat) KURZGEFASSTE BESCHREIBUNG des MONDES :; 

 ein Auszug aus der grosseren Selenographie ; with folding plate, roy. 8vo. sewn, uncut, 3s 6d 



Berlin, 1839* 



11268 MADRAS OBSERVATORY: RESULTS of OBSERVATIONS of the FIXED STARS made with 

 the MERIDIAN CIRCLE at the GOVERNMENT OBSERVATORY, MADRAS, edited by NORMAN ROBERT- 

 POGSON and C. MICHIE SMITH, FF.R.A.S., Vols. I-IX (Observations 1862-87, and GENERAL. 

 CATALOGUE), 8 vols. 4to. and 1 vol. roy. 4to. cl., 1. 5* Madras, 1887-99* 



As an observer only one or two contemporaries could equal Pogson. In all he discovered nine minor planets between 

 Mars and Jupiter, and twenty-one new variable stars.' D.N.B. 



11269 in the Years 1862-4 (VOL. I), 4to. cl., 5s ibidem, 1887 



11270 1883-7 (VOL. VIII), 4to. cl.,4s ib., 1894 



11271 GENERAL CATALOGUE (VOL. IX), roy. 4to. cl , 7s 6d ib., 1899" 



: GENERAL CATALOGUE of the PRINCIPAL FIXED STARS, 1830-43- -v. TAYLOR (T. G.) post, 



11272 MAGELLAN" [sive MAGALHAENS] (Joao Hyazinthe, F.R.S.) COLLECTION de DIFFERENS 

 TRAITES sur des INSTRUMENS d'AsTRONOMiE, PHYSIQUE, etc. ; I. Nouveaux Instrumens Circu- 

 laires a Reflection. II. Quadrans Astronomiques Mobiles. III. NOUVEAUX BAROMETRES Port- 

 ables et cenx a grande Echelle, etc. IV. Essai sur le Feu Elementaire, et sur la Chaleur des Corps, 

 avec la Description des NOUVEAUX THERMOMETRES. V. Instrumens ordonnes par la Cour 

 d'Espagne. VI. Nouveau Remede de Mr. Mudge pour la Toux ; with 3 folding plates, 4to. sound'' 

 copy in contemporary tree-calf (rare), \. Is Londres, W. Richardson, 1780- 



'He devoted his last years to perfectingthe construction of scientific instruments for scientific observation, such as^ 

 thermometers and barometers, etc.' JJ. N. B. 



11273 DESCRIPTION of a GLASS APPARATUS, for making MINERAL WATERS, like those of 



Pyrmont, Spa, Seltzer, etc., in a few Minutes, and a very little Expence, with Description of some 

 New EUDIOMETERS, or Instruments for ascertaining the Wholsomeness of Respirable Air, and 

 the Method of using them, first edition, with front., 8vo. (pp. 55), sewn, Is Qd 1777 



11274 ANOTHER COPY, original paper cover, uncut, with inscr. (as below), 9s 



' Pour la Bibliotheque de Son Alt 6 S me le Due d'Arenberg de la part de 1'auteur.' Inscr. on cover. 



Magellan's eudiometer is based 01. Dr. Priestley's suggestion to use nitric oxide for ascertaining the amount of oxygen..' 

 contained in gases and in the atmosphere. 



11275 DESCRIPTION des OCTANTS et SEXTANTS ANGLOIS, on Quarts de Cercle a Reflection, 



avec la Maniere de se servirde ces Instrumens, pour prendre toutes Sorbes de Distances Angulaires, 

 tant sur Mer que sur Terre, avec Me"rnoire sur une Nouvelle Construction de ces Instrumens, et 

 Appendix, contenant la Description et les Avantages d'un Double-Sextant nouveau ; with $ 

 folding plates, 4tp. hf. roan (scarce), 15s 1775- 



'His book on English reflecting instruments, published in 1775, was declared by Lalande to be the most complete 

 work on the subject at that period.' D. N. B. 



11276 MAGTJIBE (William B.) DOMESTIC SANITARY DRAINAGE and PLUMBING: Lectures on 

 Practical Sanitation delivered at the Central Technical Institution, South Kensington, with 283- 

 woodcuts, 8vo. cl., 4s 6d (p. 12s) 1890*- 



11277 MAHAN (Dennis Hart) ELEMENTARY COURSE of CIVIL ENGINEERING, edited by PETER 

 BARLOW, F.R.S. , with \5plates, 4to. hf. bound (joints broken), 3s 6d Glasgow, 1838- 



11278 ANOTHER COPY, cl., 4s 6d 



This work is quite different from the one below. The above is the last edition of the original ' Elementary Course.' 



112/9 ELEMENTARY COURSE of CIVIL ENGINEERING, 6th Edition, with large Addenda, with 



numerous woodcuts, 8vo. cl., or, hf. morocco, 4s (p. 18s) New York, 1864 or '52 



1 Mahan's and Millington's books on civil engineering sre unequalled; in fact they are the most valuable works on thes^ 

 subject in the English language.' Allibone. 



MAHON (Viscount) PRINCIPLES of ELECTRICITY (1779) v. STANHOPE (Charles 3rd Earl),. 

 post, et No. 4558, ante. 



