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



2646 LITTLE (James, pr.) Conjectures on the Physical Causes of Earthquakes and Vol- 

 canoes, explaining them on a new Hypothesis of the Structure of the Earth, and of the Existence 

 of an Internal Atmosphere communicating with ours, 8vo. boards, uncut {rare), lOs 6d 



Dvhliru 1820 



The author attempts to prove that earthquakes are caused ' by the explosion of confined or compressed air in cavities 

 underground.' 



•2647 LIVERPOOL ASTRONOMICAL SOCIETY'S Journal, from 1883-4 to 1888-9 (Vols. 2-7), 

 with numerous plates and woodcuts, 6 vols. 8vo. in 4, red roan gilt {wanting titles of vv. 3 and 4), 

 10s Qd Liverpool, 1883-9 



2648 COMPASS COMMISSION'S Three Reports on the Magnetism of Ships and the 



Deviations of the Compass, Avith Additional Papers by Archibald Smith, f.r.s., and Capt. 

 Sir Frederick John Owen Evans, r.n., numerous plates and charts, 8vo. hf. morocco, 

 Is Qd Washington, 1869 



' This report is by very far the most important document, in reference to the difiicult subjects of the magnetism of iron 

 ships, the change of magnetism, the correction of the compass, and the adjustment of the correcting apparatus, that has 

 yet appeared.'— ,Sir G. B. Airy, F.R.S. 



2649 LLOYD (Humphrey, d.d., f.r.s. ; Provost T. C. D.) Elementary Treatise on the Wave- 

 Theory of Light, 2nd Ed., with Additions, diagrams, 8vo. cl., 5s 1857 



2650 Third Edition, revised and enlarged, with diagrams, 8vo. cl. {out of print), 8* Qd 1873 



' There is no book in any language which puts the leading principles of this subject so clearly and concisely, and at the 



same time so completely and in such an interesting manner, before the student.' — Academy. 



2651 Lectures on the Wave Theory of Light, 2 folding plates, 8vo. cl., uncut, 5s 



Dublin, 1841 



Forming the first edition of the ' Elementary Treatise on the "Wave Theory of Light.' 



2652 On the Mean Results of Observations, 4to. (pp. 1.3), sewn, Is Qd ib., 1849 



' Dr. [George] Buist from the Author.'— /riser, on title. 



2653 — Miscellaneous Papers connected with Physical Science, with 4 plates, and woodcuts, 



thick 8vo. cl., uncut (put of print), 9* (p. \Qs) 1877 



Containing the author's important papers as contributed to the Transactions of the Royal Irish Academy, the British 

 Association Reports, etc., also his Lectures and Addresses. It includes his invention, 'of a new magnetical instrument 

 for the measurement of the inclination,' etc., his discovery of conical refraction in biaxial crystals, his valuable report on 

 the ' Progress and Present State of Physical Optics ', his investigations on ' light reflected and transmitted by thin plates," 

 etc. etc. 



2654 Results of Observations at the Magnetical Observatory of Dublin, 1840-3 : 



I. Series : Magnetic Declination, 3 plates, 4to. (pp. 25), sewn, with author's inscr. to Dr. Buist, 

 3s Qd Dublin, 1849 



2655 Treatise on Light and Vision, diagrams, 8vo. hf morocco gilt {title stamped) ; 



scarce, V2s ' 1831 



The author's first publication. 



' A most valuable though scarce v/ork. The chapter on spherical aberration and the general description of instruments 

 have been derived mainly from this treatise.'— Pro/. Heath in, ' Genmetrical Optics'. 



2656 Treatise on Magnetism, General and Terrestrial, 3 plates, and diagrams, 8vo. cl., 



uncut {ovt of print). Is Qd 1874 



2657 LOCK (Alfred G.) Gold : its Occurrence and Extraction ; the Geographical and Geological 

 Distribution of Gold-bearing Rocks, Modes of Working Shallow Placers, etc., Hydranlicing, the 

 Reduction and Separation of Auriferous Quartz, the Treatment of Complex Ores containing other 

 Metals ; also a Bibliography and a Glossary of English and Foreign TeRxMS, with 185 woodcuts, 

 and 6 maps, thick impl. 8vo. (pp. 1250), cl. (SCARCE), £1. 105 (p. £2. 12s Qd) 1882 



The most extensive work on the subject ever written, and indispensable as a work of reference. 



2658 LOCK (Charles G. Warnford) Workshop Receipts, third series, illustrated, pest 8vo. cl, 

 \s Qd (p. 5s) 1885 or '89 



2659 Fourth Series, illustrated, post 8vo. cl., \s Qd (p. 5s) 1889 



2660 Miner's Pocket Book : a Reference Book, with woodcuts, fcap. 8vo. roan, a. e., 4s 



(p. 12s Qd) "^ 1892 



2661 LOCKYER (Sir Joseph Norman, f.r.s.) Astronomical Works (as under), with numerous 

 plates and other illustrations, 6 vols. (4 8vo., 1 post 8vo., and 1 12mo), cl. {partly out of print), £2. 5s 

 (p. £4. 12s 6of) 1868-90 



Contents :— Elementary Les.sons in Astronomy, '68: The Spectroscope and its Applications, '73: Ccmtributions to 

 Solar Physics, '74 : Stargazing, Past and Present, '78 : Chemistry of the Sun, '87 : The Meteoritic Hypothesis, '90. 



2662 The Chemistry of the Sun, with 1.34 illustrations, Svo.cl. {out of print). Is Qd (p. 14s) 1887 



This work develops the author's theory of sun-spots, first communicated to the Royal Society in 1886. 



2663 Contributions to Solar Physics : a Popular Account, with special reference to 



Spectroscopic Researches, with coloured plates and 175 woodcuts, thick 8vo. cl. extra, t.e. q. 



{out of print), 10s Qd (p. £1. lis Qd) 1874 



The author was the first to apply spectroscopy to the study of the sun's surface, 

 2664 The Uawn of Astronomy : a Study of the Temple- Worship and Mythology of the 



Ancient Egyptians, with plates and numerous other illustrations, sq. roy. 8vo. buckram, t. e. g. 



(SCARCE), 17s Qd 1894 



2665 Elementary Lessons in Astronomy [revised Ed.], coloured front., 15 plates, and 78 



woodcuts. 12mo. cl., 2s Qd (p. 5s Qd) 1883 or '86 



2666 The Meteoritic Hypothesis : the Results of a Spectroscopic Inquiry into the Results of 



Cosmical Systems, 7 plates, and 101 woodcuts, 8vo. cl., 12s (p. 17s nett) 1890 



This important work contains all the author's investigations on the subject, and includes his proposition that 'all 

 self-luminous bodies in the celestial space are composed either of swarms of meteorites, or of masses of meteoric vapour 

 produced by heat.' 



2667 The Spectroscope and its Applications, coloured front., and 60 woodcuts, post Svo. cl. 



{scarce), 5s 1873 



